LORD ABBETT AFFILIATED FUND INC
497, 1997-11-10
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LORD ABBETT AFFILIATED FUND, INC.
The General Motors Building
767 Fifth Avenue
New York, NY 10153-0203
800-426-1130

Lord Abbett  Affiliated  Fund, Inc. ("we" or the "Fund"),  is a mutual fund with
four classes of shares.  These classes,  designated  Class A, B, C and P shares,
provide investors with different  investment options in purchasing shares of the
Fund. See  "Purchases"  for a description  of these choices.  The Class P shares
will be offered to the public for the first time on or about  November 10, 1997.
Our  investment  objective  is  long-term  growth of capital and income  without
excessive  fluctuations  in market  value.  We seek to attain our  objective  by
investing in securities  selling at reasonable  prices in relation to value.  We
normally  invest in large,  seasoned  companies  in sound  financial  condition,
issuing common stocks which are expected to perform  above-average  with respect
to  earnings  and price  appreciation.  There can be no  assurance  that we will
achieve our objective.  This  Prospectus  sets forth  concisely the  information
about  the Fund  that a  prospective  investor  should  know  before  investing.
Additional  information  about the Fund has been filed with the  Securities  and
Exchange  Commission and is available upon request without charge. The Statement
of Additional  Information is incorporated by reference into this Prospectus and
may  be  obtained,  without  charge,  by  writing  to  the  Fund  or by  calling
800-874-3733.  Ask for "Part B of the  Prospectus -- the Statement of Additional
Information".  The date of this  Prospectus  and of the  Statement of Additional
Information is March 1, 1997, as supplemented on November 10, 1997.

PROSPECTUS
Investors  should  read  and  retain  this  Prospectus  for  future   reference.
Shareholder  inquiries  should  be made in  writing  directly  to the Fund or by
calling  800-821-5129.  You also can make inquiries through your  broker-dealer.
Shares of the Fund are not deposits or obligations of, or guaranteed or endorsed
by, any bank,  and the shares are not federally  insured by the Federal  Deposit
Insurance  Corporation,  the Federal  Reserve  Board,  or any other  agency.  An
investment in the Fund involves risks, including the possible loss of principal.

        1       Investment Objective         2

        2       Fee Table                    2

        3       Financial Highlights         3

        4       How We Invest                4

        5       Purchases                    4

        6       Shareholder Services        10

        7       Our Management              11

        8       Dividends, Capital Gains
                Distributions and Taxes     11

        9       Redemptions                 12

        10      Performance                 12

THESE  SECURITIES  HAVE NOT BEEN APPROVED OR  DISAPPROVED  BY THE SECURITIES AND
EXCHANGE  COMMISSION OR ANY STATE  SECURITIES  COMMISSION NOR HAS THE SECURITIES
AND  EXCHANGE  COMMISSION  OR ANY STATE  SECURITIES  COMMISSION  PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

<PAGE>

1 INVESTMENT OBJECTIVE

Our  investment  objective  is  long-term  growth of capital and income  without
excessive fluctuations in market value.

2 FEE TABLE

A summary of the Fund's expenses is set forth in the table below. The example is
not a representation of past or future expenses.  Actual expenses may be greater
or less than those shown.
<TABLE>
<CAPTION>
                                             CLASS A        CLASS B                       CLASS C                  CLASS P
                                             SHARES         SHARES                        SHARES                   SHARES

<S>                                          <C>            <C>                           <C>                  <C>    
SHAREHOLDER TRANSACTION EXPENSES(1)
(AS A PERCENTAGE OF OFFERING PRICE)
Maximum Sales Load(2) on Purchases
(See "Purchases")                            5.75%          None                          None                     None

Deferred Sales Load(2) (See "Purchases")     None           5% if shares are redeemed     1% if shares             None
                                                            before 1st anniversary        are redeemed
                                                            of purchase, declining        before 1st anniversary
                                                            to 1% before 6th              of purchase
                                                            anniversary and
                                                            eliminated on and
                                                            after 6th anniversary(3)

ANNUAL FUND OPERATING EXPENSES(4)
(AS A PERCENTAGE OF AVERAGE NET ASSETS)
Management Fees (See "Our Management")       0.32%          0.32%                         0.32%                    0.32%
12b-1 Fees (See "Purchases")(1)(2)           0.22%          1.00%                         1.00%                    0.45%
Other Expenses (See "Our Management")        0.13%          0.13%                         0.13%                    0.13%
Total Operating Expenses                     0.67%          1.45%                         1.45%                    0.90%


EXAMPLE:Assume  an  annual  return  of 5% and there is no change in the level of
        expenses described above. For a $1,000 investment,  with reinvestment of
        all  distributions,  you would have paid the following  total  expenses,
        assuming redemption before the end of each time period indicated:

                    1 YEAR      3 YEARS      5 YEARS   10 YEARS
Class A shares       $64           $78          $93     $136
Class B shares       $64           $75          $98     $152
Class C shares       $25           $46          $79     $174
Class P shares        $9           $29          $50     $111

You  would  pay the  following  expenses  on the same  investment,  assuming  no
redemption:

                    1 YEAR      3 YEARS      5 YEARS   10 YEARS
Class A shares       $64           $78         $93      $136
Class B shares       $15           $46         $79      $152
Class C shares       $15           $46         $79      $174
Class P shares        $9           $29         $50      $111
<FN>

(1)Although  the Fund does  not,  with  respect  to the Class B, C and P shares,
charge a  front-end  sales  charge,  investors  should be aware  that  long-term
shareholders  may pay,  under the Rule 12b-1 plans  applicable to the Class B, C
and P shares of the Fund (which pays annually 0.20%, for service, in the case of
Class P, and  0.25% for  service,  in the case of Class B and C and  0.25%,  for
distribution, in the case of Class P, and 0.75% for distribution, in the case of
Class B and C), more than the economic equivalent of the maximum front-end sales
charge as permitted by certain rules of the National  Association  of Securities
Dealers,  Inc.  Likewise,  with respect to Class A shares,  investors  should be
aware that,  over the long term,  such  maximum may be exceeded  due to the Rule
12b-1 plan  applicable  to Class A shares  which  permits  the Fund to pay up to
0.50%  in  total  annual  fees,   half  for  service  and  the  other  half  for
distribution.  The 12b-1 fee for the Class A shares has been restated to reflect
estimated current fees under the recently amended Class A 12b-1 plan; the actual
12b-1 fees for such shares for the fiscal year ended  October 31, 1996 under the
former plan were 0.21%.

(2)Sales  "load" is  referred  to as sales  "charge",  "deferred  sales load" is
referred to as  "contingent  deferred sales charge" (or "CDSC") and "12b-1 fees"
which  consist of a "service  fee" and a  "distribution  fee" are referred to by
either or both of these terms where  appropriate  with  respect to Class A, B, C
and P shares throughout this Prospectus.

(3) Class B shares  will  automatically  convert to Class A shares on the eighth
anniversary of the purchase of Class B shares.

(4)The annual operating  expenses for Class A, B and C shares have been restated
from October 31, 1996 fiscal year amounts to reflect  current  fees.  The annual
operating  expenses  for the  Class P shares  are  based on  estimated  expenses
incurred by Class A, B and C shares  because  Class P shares were not  available
for purchase prior to the Fund's current fiscal year.

The  foregoing  is provided  to give  investors  a better  understanding  of the
expenses that are incurred by an investment in the Fund.
</FN>
</TABLE>


<PAGE>
3 FINANCIAL HIGHLIGHTS

The  following  table has been  audited by  Deloitte & Touche  llp,  independent
public  accountants,  in  connection  with  their  annual  audit  of the  Fund's
Financial  Statements,  whose report thereon is incorporated by reference in the
Statement of Additional Information and may be obtained on request, and has been
included  herein in reliance upon their  authority as experts in accounting  and
auditing.
<TABLE>
<CAPTION>
PER CLASS A SHARE+ OPERATING                      YEAR ENDED OCTOBER 31,

PERFORMANCE:                           1996      1995      1994      1993      1992      1991      1990     1989     1988    1987
<S>                                    <C>       <C>       <C>       <C>       <C>       <C>       <C>      <C>      <C>     <C>

NET ASSET VALUE, BEGINNING OF YEAR    $11.98     $11.03    $11.26    $10.55    $10.29    $8.91     $10.43   $9.64    $10.44  $11.71
INCOME FROM INVESTMENT OPERATIONS  
Net investment income                    .30        .32       .31       .31       .38      .40        .44     .46       .46      .51
Net realized and unrealized
gain (loss) on investments              2.23       1.70       .38      1.43       .61     1.92      (1.16)   1.16       .57    (.12)
Total from investment operations        2.53       2.02       .69      1.74       .99     2.32       (.72)   1.62      1.03     .39
DISTRIBUTIONS
Dividends from net investment income    (.30)      (.30)     (.32)     (.35)     (.40)    (.41)      (.44)   (.48)     (.49)   (.52)
Distributions from net realized gain   (1.19)      (.77)     (.60)     (.68)     (.33)    (.53)      (.36)   (.35)    (1.34)  (1.14)
NET ASSET VALUE, END OF YEAR          $13.02     $11.98    $11.03    $11.26    $10.55   $10.29      $8.91  $10.43     $9.64  $10.44
Total Return*                          23.23%     20.46%     6.66%    17.76%    10.36%   28.00%     (7.57)% 18.04%    12.19%   2.84%
RATIOS/SUPPLEMENTAL DATA:
RATIOS TO AVERAGE NET ASSETS: 
Expenses                                0.66%      0.63%     0.63%     0.63%     0.60%    0.58%      0.50%   0.42%    0.43%    0.37%
Net investment income                   2.61%      2.90%     2.91%     2.95%     3.73%    4.22%      4.37%   4.64%    5.00%    4.18%

                                   CLASS B SHARES            CLASS C SHARES
PER CLASS SHARE OPERATING          AUGUST 1, 1996** TO       AUGUST 1, 1996** TO
PERFORMANCE:                       OCTOBER 31, 1996          OCTOBER 31, 1996 

NET ASSET VALUE, BEGINNING OF PERIOD  $11.88                     $11.88 
INCOME FROM  INVESTMENT  OPERATIONS
Net  investment  income                  .060                       .062 
Net realized and  unrealized
gain on securities                      1.142                      1.130 
Total from  investment operations       1.202                      1.192 

DISTRIBUTIONS 
Dividends from net investment income    (.052)                     (.052)
NET ASSET  VALUE,  END OF PERIOD      $13.03                     $13.02 
TOTAL  RETURN*                         10.15%++                   10.07%++  

RATIOS/SUPPLEMENTAL  DATA:  
RATIOS TO  AVERAGE  NET  ASSETS:
Expenses                                0.34%++                    0.33%++ 
Net investment income                   0.27%++                    0.25%++

                                                          YEAR ENDED OCTOBER 31,
SUPPLEMENTAL DATA FOR ALL CLASSES:
                             1996      1995      1994      1993      1992      1991      1990      1989       1988       1987
<S>                          <C>       <C>       <C>       <C>       <C>       <C>       <C>       <C>        <C>        <C>     
Net assets, end of year (000)$6,100,665$4,964,525$4,229,586$4,174,033$3,680,332$3,565,230$3,032,954$3,550,414 $3,339,427 $3,364,128
PORTFOLIO TURNOVER RATE         47.06%    53.84%    51.48%     45.15%   42.00%    56.38%     31.78%   34.08%     26.95%  43.11%
Average commissions per share
paid on equity transactions     $0.064    $0.063     --        --        --        --          --       --        --         --
<FN>

     *  Total return does not consider the effects of sales charges.

     ** Commencement of offering Class shares.

     +  The Fund had only one class of  shares  prior to July 12,  1996.  That
        class of shares is now designated Class A shares.

    ++  Not annualized.

        See Notes to Financial Statements.
</FN>
</TABLE>

<PAGE>

4 HOW WE INVEST

We believe that long-term investors purchase and redeem shares to meet their own
financial requirements rather than to take advantage of price fluctuations.

If so,  their  needs  will be best  served by a growth  investment  seeking  low
fluctuations  in  market  value.  For this  reason,  we try to keep  our  assets
invested in  securities  which are selling at  reasonable  prices in relation to
value and, thus, we are willing to forgo some  opportunities  for gains when, in
our judgment, they carry excessive risk.

We try to  anticipate  major  changes in the economy and select  stocks which we
believe will benefit most from these changes.  We also look for positive  change
within market sectors, industries and individual companies.

Normally we invest in large,  seasoned companies,  in sound financial condition,
issuing  common stocks  (including  securities  convertible  into common stocks)
which are expected to perform  above  average with respect to earnings and price
appreciation. Although the prices of common stocks fluctuate and their dividends
vary, historically,  common stocks have appreciated in value and their dividends
have increased when the companies they represent have prospered and grown.

We constantly  balance the  opportunity  for profit against the risk of loss. In
the past,  very few industries  have  continuously  provided the best investment
opportunities. We believe it is important to take a flexible approach and adjust
the  portfolio  to reflect  changes in the  opportunities  for sound  investment
relative to the risks assumed. Therefore, we sell securities that we judge to be
overpriced and reinvest the proceeds in other  securities which we believe offer
better value.

We may (a) for income and  flexibility,  write covered call options  traded on a
national  securities  exchange with respect to securities in our portfolio,  (b)
invest  up to 10% of our net  assets  (at the  time of  investment)  in  foreign
securities and (c) invest in straight bonds or other debt securities,  including
lower rated,  high-yield  bonds.  We do not intend to write covered call options
with respect to  securities  with an aggregate  market value of more than 10% of
our gross assets at the time an option is written.  We will not invest more than
5% of our net  assets  (at the time of  investment)  in lower  rated  (BB/Ba  or
lower), high-yield bonds.

The Fund may engage in the lending of its portfolio securities.  These loans may
not exceed 30% of the value of the Fund's total assets.  In such an arrangement,
the Fund lends securities from its portfolio to registered broker-dealers.  Such
loans are continuously  collateralized.  Such collateral must be maintained on a
current basis at an amount at least equal to the market value of the  securities
loaned.  Cash  collateral  is  invested  in  short-term  obligations  issued  or
guaranteed  by the U.S.  Government or its  agencies,  commercial  paper or bond
obligations rated AA or A-1/P-1 by Standard & Poor's Ratings Services ("S&P") or
Moody's Investors Service  ("Moody's") or repurchase  agreements with respect to
the foregoing.  As with other extensions of credit,  there are risks of delay in
recovery and loss should the borrower of the security fail financially.

We do not purchase securities for trading purposes. To create reserve purchasing
power and also for temporary defensive  purposes,  we may invest in high-quality
money market instruments (short-term  obligations of banks,  corporations or the
U.S. Government).

The  Fund  may  invest  up to 15% of its  net  assets  in  illiquid  securities.
Securities  determined by the Fund's Board of Directors to be liquid pursuant to
Securities and Exchange  Commission  Rule 144A ("Rule 144A") will not be subject
to this  limit.  Under  Rule  144A,  a  qualifying  security  may be resold to a
qualified institutional buyer without registration and without regard to whether
the seller originally purchased the security for investment.  Investments by the
Fund in Rule 144A  securities  initially  determined to be liquid could have the
effect of  diminishing  the level of the  Fund's  liquidity  during  periods  of
decreased market interest in such securities.

We will not change  our  investment  objective  or our  investment  restrictions
without  shareholder  approval.  If we determine  that our objective can best be
achieved by a  substantive  change in  investment  policy,  which may be changed
without  shareholder  approval,  we may make such change by disclosing it in our
prospectus.

RISK  FACTORS.  Securities  markets of foreign  countries are not subject to the
same degree of regulation as the U.S.  markets and may be more volatile and less
liquid  than  the  major  U.S.  markets.  There  may be less  publicly-available
information on  publicly-traded  issuers in foreign  countries than is generally
the case in the United  States.  The lack of uniform  accounting  standards  and
practices  among  countries  impairs  the  validity  of  direct  comparisons  of
valuation  measures (such as price/earnings  ratios) for securities in different
countries.  Other  considerations  include  political  and  social  instability,
expropriation,  higher transaction  costs,  currency  fluctuations,  withholding
taxes that cannot be passed through as a tax credit or deduction to shareholders
and different securities settlement practices.  Foreign securities may be traded
on days that we do not value our portfolio securities and, accordingly,  our net
asset value may be significantly  affected on days when shareholders do not have
access to the Fund.

Convertible bonds and convertible preferred stocks tend to be more volatile than
straight  bonds but tend to be less  volatile and produce more income than their
underlying common stocks.

5 PURCHASES

ALTERNATIVE SALES ARRANGEMENTS

CLASSES OF SHARES.  The Fund offers investors four different  classes of shares.
The different  classes of shares represent  investments in the same portfolio of
securities but are subject to different  expenses and will likely have different
share prices.  Investors  should read this section  carefully to determine which
class represents the best investment option for their particular situation.

CLASS A SHARES.  If you buy Class A shares,  you pay an initial  sales charge on
investments  of less than $1 million (or on investments  for  employer-sponsored

<PAGE>

retirement  plans under the Internal  Revenue Code  (hereinafter  referred to as
"Retirement Plans") with less than 100 eligible employees or on investments that
do not qualify to be under a "special  retirement  wrap  program"  defined under
"Class A Net Asset Value  Purchases"  below).  If you purchase Class A shares as
part of an  investment of at least $1 million (or for  Retirement  Plans with at
least 100 eligible  employees  or under a special  retirement  wrap  program) in
shares of one or more Lord  Abbett-sponsored  funds, you will not pay an initial
sales  charge,  but if you redeem any of those shares within 24 months after the
month in which you buy them, you may pay to the Fund a contingent deferred sales
charge  ("CDSC") of 1% except for  redemptions  under a special  retirement wrap
program.  Class A shares are subject to service and  distribution  fees that are
currently estimated to total annually approximately 0.22 of 1% of the annual net
asset value of the Class A shares.  The initial sales charge rates, the CDSC and
the Rule 12b-1 plan  applicable  to the Class A shares are  described in "Buying
Class A Shares" below.

CLASS B SHARES.  If you buy Class B shares,  you pay no sales charge at the time
of  purchase,  but if you redeem your  shares  before the sixth  anniversary  of
buying them, you will normally pay a CDSC to Lord Abbett  Distributor LLC ("Lord
Abbett  Distributor").  That CDSC varies  depending  on how long you own shares.
Class B shares are subject to service and distribution fees at an annual rate of
1% of the  annual net asset  value of the Class B shares.  The CDSC and the Rule
12b-1 plan  applicable  to the Class B shares are  described in "Buying  Class B
Shares" below.

CLASS C SHARES.  If you buy Class C shares,  you pay no sales charge at the time
of  purchase,  but if you redeem your  shares  before the first  anniversary  of
buying  them,  you will  normally  pay the Fund a CDSC of 1%. Class C shares are
subject to service and  distribution  fees at an annual rate of 1% of the annual
net  asset  value of the  Class C  shares.  The CDSC  and the  Rule  12b-1  plan
applicable to the C shares are described in "Buying Class C Shares" below.

CLASS P SHARES.  If you buy Class P shares,  you pay no sales charge at the time
of purchase,  and if you redeem your shares you pay no CDSC.  Class P shares are
subject to service and  distribution  fees at an annual rate of .45 of 1% of the
average  daily  net  asset  value of the Class P  shares.  The Rule  12b-1  plan
applicable  to the Class P shares is  described  in "Class P Rule  12b-1  Plan".
Class P shares  are  available  to a  limited  number of  investors  who are not
necessarily eligible for the other classes of shares offered by this prospectus.
See "Buying Class P Shares" below.

WHICH  CLASS OF SHARES  SHOULD YOU  CHOOSE?  Once you decide that the Fund is an
appropriate  investment  for you,  the  decision  as to which class of shares is
better  suited to your needs  depends  on a number of  factors  which you should
discuss with your financial adviser. The Fund's class-specific  expenses and the
effect of the different  types of sales charges on your  investment  will affect
your investment  results over time. The most important  factors are how much you
plan to invest and how long you plan to hold your investment.  If your goals and
objectives  change over time and you plan to  purchase  additional  shares,  you
should  re-evaluate those factors to see if you should consider another class of
shares.

In the following discussion, to help provide you and your financial adviser with
a framework in which to choose a class,  we have made some  assumptions  using a
hypothetical  investment  in the Fund. We used the sales charge rates that apply
to Class  A,  Class B and  Class C, and  considered  the  effect  of the  higher
distribution  fees on Class B and  Class C  expenses  (which  will  affect  your
investment  return). Of course, the actual performance of your investment cannot
be predicted and will vary, based on the Fund's actual investment  returns,  the
operating  expenses  borne by each class of shares,  and the class of shares you
purchase.  The factors briefly discussed below are not intended to be investment
advice,  guidelines  or  recommendations,   because  each  investor's  financial
considerations are different. The discussion below of the factors to consider in
purchasing a particular  class of shares assumes that you will purchase only one
class of shares and not a combination of shares of different classes.

HOW LONG DO YOU EXPECT TO HOLD YOUR  INVESTMENT?  While future  financial  needs
cannot be  predicted  with  certainty,  knowing how long you expect to hold your
investment  will assist you in selecting the  appropriate  class of shares.  For
example,  over time, the reduced sales charges available for larger purchases of
Class A shares may offset the effect of paying an initial  sales  charge on your
investment,  compared to the effect over time of higher class-specific  expenses
on Class B or Class C shares for which no initial sales charge is paid.  Because
of the effect of  class-based  expenses,  your choice  should also depend on how
much you plan to invest.

INVESTING FOR THE SHORT TERM. If you have a short-term  investment horizon (that
is,  you plan to hold your  shares  for not more  than six  years),  you  should
probably  consider  purchasing  Class A or Class C shares  rather  than  Class B
shares.  This is because of the effect of the Class B CDSC if you redeem  before
the sixth  anniversary  of your  purchase,  as well as the effect of the Class B
distribution  fee on the  investment  return for that  class in the short  term.
Class C shares might be the  appropriate  choice  (especially for investments of
less than $100,000), because there is no initial sales charge on Class C shares,
and the CDSC does not apply to amounts you redeem after holding them one year.

However,  if you plan to invest more than $100,000 for the short term,  then the
more you invest and the more your investment horizon increases toward six years,
the more  attractive  the Class A share  option may become.  This is because the
annual  distribution  fee on Class C shares  will have a greater  impact on your
account over the longer term than the reduced  front-end sales charge  available
for  larger  purchases  of Class A shares.  For  example,  Class A might be more
appropriate  than Class C for  investments of more than $100,000  expected to be
held for 5 or 6 years (or more).  For investments  over $250,000  expected to be
held 4 to 6 years (or more),  Class A shares may become  more  appropriate  than
Class  C. If you are  investing  $500,000  or  more,  Class  A may  become  more
desirable as your investment horizon approaches 3 years or more.

For most investors who invest $1 million or more or for Retirement Plans with at

<PAGE>

least 100 eligible employees or for investments pursuant to a special retirement
wrap program, in most cases Class A shares will be the most advantageous choice,
no matter how long you intend to hold your shares. For that reason,  Lord Abbett
Distributor  normally will not accept  purchase orders (i) for Class B shares of
$500,000  or more and for  Class C shares  of  $1,000,000  or more from a single
investor or (ii) for Class B or C shares (a) for Retirement  Plans with at least
100 eligible employees or (b) for special retirement wrap programs.

INVESTING  FOR THE LONGER TERM.  If you are  investing  for the longer term (for
example,  to provide  for future  college  expenses  for your  child) and do not
expect to need access to your money for seven years or more,  Class B shares may
be an appropriate  investment  option, if you plan to invest less than $100,000.
If you plan to invest more than $100,000 over the long term, Class A shares will
likely be more  advantageous than Class B shares or Class C shares, as discussed
above,  because of the effect of the expected  lower expenses for Class A shares
and the reduced initial sales charges available for larger  investments in Class
A shares under the Fund's Rights of Accumulation.

Of course,  these examples are based on  approximations of the effect of current
sales charges and expenses on a  hypothetical  investment  over time, and should
not be relied on as rigid guidelines.

ARE THERE  DIFFERENCES  IN ACCOUNT  FEATURES  THAT MATTER TO YOU?  Some  account
features  are  available  in whole or in part to  Class A,  Class B and  Class C
shareholders.  Other features (such as Systematic Withdrawal Plans) might not be
advisable in non-Retirement  Plan accounts for Class B shareholders  (because of
the effect of the CDSC on the entire  amount of a  withdrawal  if it exceeds 12%
annually) and in any account for Class C  shareholders  during the first year of
share  ownership  (due  to the  CDSC  on  withdrawals  during  that  year).  See
"Systematic  Withdrawal Plan" under "Shareholder  Services" for more information
about the 12% annual  waiver of the CDSC.  You should  carefully  review how you
plan to use your  investment  account before  deciding which class of shares you
buy. For example, the dividends payable to Class B and Class C shareholders will
be reduced by the expenses  borne solely by each of these  classes,  such as the
higher  distribution  fee to which  Class B and Class C shares are  subject,  as
described below.

HOW DOES IT AFFECT PAYMENTS TO MY BROKER?  A salesperson,  such as a broker,  or
any other person who is entitled to receive compensation for selling Fund shares
may  receive  different  compensation  for  selling  one class than for  selling
another class. As discussed in more detail below, such compensation is primarily
paid at the time of sale in the case of  Class A and B shares  and is paid  over
time, so long as shares remain outstanding, in the case of Class C shares. It is
important that investors understand that the primary purpose of the CDSC for the
Class B shares  and the  distribution  fee for Class B and Class C shares is the
same as the purpose of the front-end sales charge on sales of Class A shares: to
compensate  brokers and other persons selling such shares. The CDSC, if payable,
supplements  the Class B  distribution  fee and reduces the Class C distribution
fee expenses for the Fund and Class C shareholders.

GENERAL

HOW  MUCH  MUST YOU  INVEST?  You may buy our  shares  through  any  independent
securities  dealer having a sales  agreement with Lord Abbett  Distributor,  our
exclusive selling agent. Place your order with your investment dealer or send it
to Lord Abbett  Affiliated  Fund, Inc. (P.O. Box 419100,  Kansas City,  Missouri
64141). The minimum initial investment is $250. For Invest-A-Matic and Div-Move,
the  subsequent  minimum  investment  is $50. See  "Shareholder  Services".  For
information  regarding the proper form of a purchase or redemption  order,  call
the Fund at 800-821-5129.  This offering may be suspended, changed or withdrawn.
Lord Abbett Distributor reserves the right to reject any order.

The net asset value of our shares is  calculated  every  business  day as of the
close of the New York Stock  Exchange  ("NYSE")  by  dividing  net assets by the
number of shares  outstanding.  Securities  are valued at their  market value as
more fully described in the Statement of Additional Information.

BUYING SHARES THROUGH YOUR DEALER.  Orders for shares received by the Fund prior
to the  close of the  NYSE,  or  received  by  dealers  prior to such  close and
received by Lord Abbett Distributor prior to the close of its business day, will
be confirmed at the  applicable  public  offering  price  effective at such NYSE
close.  Orders  received by dealers  after the NYSE closes and  received by Lord
Abbett  Distributor  in proper form prior to the close of its next  business day
are executed at the applicable  public  offering price effective as of the close
of the NYSE on that next business day. The dealer is responsible  for the timely
transmission  of orders to Lord Abbett  Distributor.  A business day is a day on
which the NYSE is open for trading.

Lord Abbett Distributor may, for specified periods,  allow dealers to retain the
full sales charge for sales of shares during such periods,  or pay an additional
concession to a dealer who,  during a specified  period,  sells a minimum dollar
amount of our shares and/or shares of other Lord Abbett-sponsored funds. In some
instances,  such additional  concessions will be offered only to certain dealers
expected to sell  significant  amounts of shares.  Lord Abbett  Distributor may,
from time to time, implement promotions under which Lord Abbett Distributor will
pay a fee to dealers with respect to certain purchases not involving  imposition
of  a  sales  charge.   Additional   payments  may  be  paid  from  Lord  Abbett
Distributor's  own  resources  and  will  be made in the  form  of cash  or,  if
permitted,  non-cash  payments.  The non-cash  payments  will  include  business
seminars at resorts or other locations,  including meals and  entertainment,  or
the receipt of  merchandise.  The cash payments will include  payment of various
business  expenses  of the dealer.  In  selecting  dealers to execute  portfolio
transactions  for the Fund's  portfolio,  if two or more dealers are  considered
capable of obtaining best  execution,  we may prefer the dealer who has sold our
shares and/or shares of other Lord Abbett-sponsored funds.

BUYING  CLASS A  SHARES.  The  offering  price of Class A shares is based on the
per-share  net asset value next  computed  after your order is  accepted  plus a
sales charge as follows.

<PAGE>

                    Sales Charge as a         Dealer's
                     Percentage of:          Concession
                                                as a              To Compute
                                    Net       Percentage           Offering
                        Offering    Amount    of Offering       Price, Divide
Size of Investment      Price       Invested   Price              NAV by
     
Less than $50,000       5.75%        6.10%      5.00%              .9425
$50,000 to $99,999      4.75%        4.99%      4.00%              .9525
$100,000 to $249,999    3.75%        3.90%      3.25%              .9625
$250,000 to $499,999    2.75%        2.83%      2.25%              .9725
$500,000 to $999,999    2.00%        2.04%      1.75%              .9800
$1,000,000 or more       No Sales Charge        1.00%+            1.0000


+Authorized  institutions  receive concessions on purchases made by a retirement
plan, pursuant to a special retirement wrap program or other qualified purchaser
within a 12-month period  (beginning with the first net asset value purchase) as
follows:  1.00% on purchases of $5 million,  0.55% of the next $5 million, 0.50%
of the next $40 million and 0.25% on purchases  over $50  million.  See "Class A
Rule 12b-1 Plan" below.


CLASS A SHARE VOLUME  DISCOUNTS.  This section describes several ways to qualify
for a lower  sales  charge  when  purchasing  Class A shares if you inform  Lord
Abbett  Distributor  or the Fund that you are  eligible at the time of purchase.
(1) Any purchaser (as described below) may aggregate a Class A share purchase in
the Fund with any share  purchases of any other  eligible Lord  Abbett-sponsored
fund, together with the current value at maximum offering price of any shares in
the Fund and in any eligible Lord Abbett-sponsored  funds held by the purchaser.
(Holdings  in the  following  funds are not  eligible  for the  above  rights of
accumulation:  Lord  Abbett  Equity  Fund  ("LAEF"),  Lord  Abbett  Series  Fund
("LASF"),  any series of Lord  Abbett  Research  Fund not offered to the general
public  ("LARF") and Lord Abbett U.S.  Government  Securities  Money Market Fund
("GSMMF"),  except for  holdings in GSMMF which are  attributable  to any shares
exchanged  from  a Lord  Abbett-sponsored  fund.)  (2) A  purchaser  may  sign a
non-binding  13-month  statement of  intention to invest  $50,000 or more in any
shares  of the  Fund or in any of the  above  eligible  funds.  If the  intended
purchases  are  completed  during the period,  the total amount of your intended
purchases  of any shares will  determine  the reduced  sales charge rate for the
Class A shares purchased during the period. If not completed, each Class A share
purchase  will be at the sales  charge for the  aggregate  of the  actual  share
purchases. Shares issued upon reinvestment of dividends or distributions are not
included in the statement of  intention.  The term  "purchaser"  includes (i) an
individual,  (ii) an individual and his or her spouse and children under the age
of 21 and (iii) a trustee  or other  fiduciary  purchasing  shares  for a single
trust estate or single fiduciary account  (including a pension,  profit-sharing,
or other  employee  benefit  trust  qualified  under Section 401 of the Internal
Revenue  Code -- more  than one  qualified  employee  benefit  trust of a single
employer,  including its consolidated  subsidiaries,  may be considered a single
trust, as may qualified plans of multiple employers  registered in the name of a
single bank  trustee as one  account),  although  more than one  beneficiary  is
involved.

CLASS A SHARE NET ASSET VALUE PURCHASES.  Our Class A shares may be purchased at
net asset value by our  directors,  employees of Lord  Abbett,  employees of our
shareholder  servicing  agent and  employees of any  securities  dealer having a
sales  agreement with Lord Abbett  Distributor who consents to such purchases or
by the trustee or custodian under any pension or profit-sharing  plan or Payroll
Deduction IRA  established for the benefit of such persons or for the benefit of
any national  securities trade  organization to which Lord Abbett or Lord Abbett
Distributor  belongs or any company with an  account(s) in excess of $10 million
managed by Lord Abbett on a private-advisory-account basis. For purposes of this
paragraph,  the  terms  "directors"  and  "employees"  include a  director's  or
employee's  spouse  (including  the surviving  spouse of a deceased  director or
employee).  The terms  "directors"  and  "employees of Lord Abbett" also include
other family  members and retired  directors and  employees.  Our Class A shares
also may be  purchased  at net asset  value (a) at $1 million or more,  (b) with
dividends  and  distributions  on Class A shares of other Lord  Abbett-sponsored
funds,  except for dividends and distributions on shares of LARF, LAEF and LASF,
(c) under the loan feature of the Lord  Abbett-sponsored  prototype  403(b) plan
for  Class A  share  purchases  representing  the  repayment  of  principal  and
interest,  (d) by certain authorized  brokers,  dealers,  registered  investment
advisers or other financial institutions who have entered into an agreement with
Lord Abbett  Distributor in accordance with certain  standards  approved by Lord
Abbett Distributor,  providing specifically for the use of our Class A shares in
particular  investment  products  made  available  for a fee to  clients of such
brokers,   dealers,   registered   investment   advisers  and  other   financial
institutions ("mutual fund wrap fee programs"),  (e) by employees,  partners and
owners of  unaffiliated  consultants  and advisers to Lord  Abbett,  Lord Abbett
Distributor or Lord Abbett-sponsored  funds who consent to such purchase if such
persons provide services to Lord Abbett,  Lord Abbett  Distributor or such funds
on a continuing  basis and are familiar with such fund,  (f) through  Retirement
Plans  with  at  least  100  eligible  employees,  (g)  subject  to  appropriate
documentation,  through a securities dealer where the amount invested represents
redemption  proceeds from shares  ("Redeemed  Shares") of a registered  open-end
management  investment  company  not  distributed  or  managed  by  Lord  Abbett
Distributor or Lord Abbett (other than a money market fund), if such redemptions
have  occurred no more than 60 days prior to the purchase of our Class A shares,
the Redeemed  Shares were held for at least six months prior to  redemption  and
the proceeds of redemption  were maintained in cash or a money market fund prior
to  purchase.  Purchasers  should  consider  the impact,  if any, of  contingent
deferred  sales charges in  determining  whether to redeem shares for subsequent
investment  in our  Class A shares.  Lord  Abbett  Distributor  may  suspend  or
terminate  the purchase  option  referred to in (g) above at any time.  (We plan
that  on  June  1,  1997  the  net  asset  value  transfer  privileges  will  be
terminated.) and (h) through a "special retirement wrap program" sponsored by an
authorized institution showing one or more characteristics distinguishing it, in
the opinion of Lord Abbett Distributor from a mutual fund wrap fee program. Such
characteristics  include,  among  other  things,  the  fact  that an  authorized
institution  does not charge its  clients  any fee of a  consulting  or advisory
nature that is  economically  equivalent to the  distribution  fee under Class A

<PAGE>

12b-1  Plan  and the fact  that  the  program  relates  to  participant-directed
Retirement Plans.

CLASS A RULE 12B-1 PLAN. We have adopted a Class A share Rule 12b-1 plan (the "A
Plan") which authorizes the payment of fees to authorized  institutions  (except
as to certain  accounts for which  tracking  data is not  available) in order to
provide additional incentives for them (a) to provide continuing information and
investment  services to their Class A  shareholder  accounts  and  otherwise  to
encourage  those accounts to remain invested in the Fund and (b) to sell Class A
shares  of the  Fund.  Under  the A Plan,  in  order to save on the  expense  of
shareholders' meetings and to provide flexibility to the Board of Directors, the
Board,  including a majority of the outside  directors  who are not  "interested
persons"  of the Fund as  defined  in the  Investment  Company  Act of 1940,  is
authorized to approve  annual fee payments from our Class A assets of up to 0.50
of 1% of the average net of such assets  consisting of distribution  and service
fees,  each at a maximum  annual rate not  exceeding  0.25 of 1% except that the
service fee may not exceed 0.15 of 1% in the case of shares sold or attributable
to shares sold prior to June 1, 1990 (the "Fee Ceiling").

Under the A Plan,  the Board has  approved  payments  by the Fund to Lord Abbett
Distributor  which uses or passes on to  authorized  institutions  (1) an annual
service fee (payable  quarterly) of .25% of the average daily net asset value of
the  Class A shares  serviced  by  authorized  institutions  and (2) a  one-time
distribution fee of up to 1% (reduced according to the following schedule: 1% of
the first $5 million,  .55% of the next $5 million, .50% of the next $40 million
and .25% over $50  million),  payable  at the time of sale on all Class A shares
sold during any  12-month  period  starting  from the day of the first net asset
value sale (i) at the $1 million  level by  authorized  institutions,  including
sales qualifying at such level under the rights of accumulation and statement of
intention  privileges;  (ii) through Retirement Plans with at least 100 eligible
employees or (iii) constituting a new sale pursuant to a special retirement wrap
program and excluding exchanges into the Fund under such a program. In addition,
the Board has  approved  for those  authorized  institutions  which  qualify,  a
supplemental  annual  distribution  fee equal to 0.10% of the average  daily net
asset value of the Class A shares serviced by authorized institutions which have
a satisfactory program for the promotion of such shares comprising a significant
percentage  of the Class A assets,  with a lower than average  redemption  rate.
Institutions  and persons  permitted by law to receive such fees are "authorized
institutions".

Under the A Plan, Lord Abbett  Distributor is permitted to use payments received
to provide continuing  services to Class A shareholder  accounts not serviced by
authorized  institutions and, with Board approval, to finance any activity which
is primarily intended to result in the sale of Class A shares. Any such payments
are subject to the Fee Ceiling.  Any  payments  under that Plan not used by Lord
Abbett Distributor in this manner are passed on to authorized institutions.

Holders of Class A shares on which the 1% sales  distribution  fee has been paid
may be  required to pay to the Fund on behalf of its Class A shares a CDSC of 1%
of the  original  cost or the then net asset value,  whichever  is less,  of all
Class A shares so purchased which are redeemed out of the Lord  Abbett-sponsored
family of funds on or before the end of the twenty-fourth  month after the month
in which the purchase  occurred.  (Exceptions  are made for: (i)  redemptions by
Retirement  Plans  due to any  benefit  payment  such  as Plan  loans,  hardship
withdrawals,  death,  retirement or separation from service with respect to plan
participants  or  the  distribution  of  any  excess   contributions   and  (ii)
redemptions  which continue as investments  in another fund  participating  in a
special retirement wrap program.) If the Class A shares have been exchanged into
another Lord  Abbett-sponsored  fund and are thereafter redeemed out of the Lord
Abbett  family of funds on or before the end of such  twenty-fourth  month,  the
charge will be collected  for the Fund's  Class A shares by the other fund.  The
Fund will  collect  such a charge  for other  Lord  Abbett-sponsored  funds in a
similar situation.

BUYING  CLASS B SHARES.  Class B shares  are sold at net  asset  value per share
without an initial  sales  charge.  However,  if Class B shares are redeemed for
cash before the sixth anniversary of their purchase, a CDSC may be deducted from
the redemption proceeds. That sales charge will not apply to shares purchased by
the reinvestment of dividends or capital gains distributions. The charge will be
assessed  on the  lesser  of the net  asset  value of the  shares at the time of
redemption  or the  original  purchase  price.  The Class B CDSC is paid to Lord
Abbett Distributor to compensate it for its services rendered in connection with
the distribution of Class B shares, including the payment and financing of sales
commissions. See "Class B Rule 12b-1 Plan" below.

To determine  whether the CDSC applies to a redemption,  the Fund redeems shares
in the following  order:  (1) shares  acquired by  reinvestment of dividends and
capital  gains  distributions,  (2) shares held until the sixth  anniversary  of
their  purchase  or later,  and (3)  shares  held the  longest  before the sixth
anniversary of their purchase.

The amount of the CDSC will depend on the number of years since you invested and
the dollar amount being redeemed, according to the following schedule.

Anniversary
of the Day on            Contingent Deferred 
Which the Purchase       Sales Charge on
Order Was Accepted       Redemptions 
                         (As % of Amount
On      Before           Subject to Charge)
        1st              5.0%
1st     2nd              4.0%
2nd     3rd              3.0%
3rd     4th              3.0%
4th     5th              2.0%
5th     6th              1.0%
on or after the          None
6th anniversary

<PAGE>

In the table,  an  "anniversary"  is the 365th day subsequent to a purchase or a
prior  anniversary.  All  purchases  are  considered  to have  been  made on the
business  day the  purchase was made.  See "Buying  Shares  Through Your Dealer"
above.

If  Class  B  shares  are  exchanged   into  the  same  class  of  another  Lord
Abbett-sponsored  fund and the new shares  are  subsequently  redeemed  for cash
before the sixth anniversary of the original purchase,  the CDSC will be payable
on the new shares on the basis of the time elapsed  from the original  purchase.
The Fund will collect such a charge for other Lord  Abbett-sponsored  funds in a
similar situation.

WAIVER OF CLASS B SALES CHARGES.  The Class B CDSC will not be applied to shares
purchased in certain types of transactions  nor will it apply to shares redeemed
in certain circumstances as described below.

The Class B CDSC will be waived for redemptions of shares (i) in connection with
the  Systematic  Withdrawal  Plan and  Div-Move  services,  as described in more
detail under  "Shareholder  Services" below; (ii) by Retirement Plans due to any
benefit payment such as Plan loans, hardship withdrawals,  death,  retirement or
separation from service with respect to plan participants or the distribution of
any excess contributions, (iii) in connection with mandatory distributions under
403(b) plans and  individual  retirement  accounts and (iv) in  connection  with
death of the shareholder.

CLASS B RULE 12B-1  PLAN.  The Fund has  adopted a Class B share Rule 12b-1 plan
(the "B Plan") under which the Fund  periodically  pays Lord Abbett  Distributor
(i) an annual  service fee of 0.25 of 1% of the average daily net asset value of
the  Class B shares  and (ii) an  annual  distribution  fee of 0.75 of 1% of the
average  daily net asset  value of the Class B shares that are  outstanding  for
less than 8 years.

Lord  Abbett   Distributor  uses  the  service  fee  to  compensate   authorized
institutions  for  providing  personal  services for accounts  that hold Class B
shares. Those services are primarily similar to those provided under the A Plan,
described above.

Lord Abbett  Distributor  pays an up-front  payment to  authorized  institutions
totalling 4%,  consisting of 0.25% for service and 3.75% for a sales  commission
as described below.

Lord Abbett Distributor pays the 0.25% service fee to authorized institutions in
advance for the first year after Class B shares have been sold by the authorized
institutions.  After  the  shares  have  been  held  for  a  year,  Lord  Abbett
Distributor pays the service fee on a quarterly basis.  Lord Abbett  Distributor
is entitled to retain such service fee payable  under the B Plan with respect to
accounts  for which there is no  authorized  institution  of record or for which
such authorized  institution  did not qualify.  Although not obligated to do so,
Lord Abbett  Distributor  may waive  receipt from the Fund or part of all of the
service fee payments.

The  0.75%  annual  distribution  fee is  paid  to Lord  Abbett  Distributor  to
compensate it for its services  rendered in connection with the  distribution of
Class B shares,  including  the  payment  and  financing  of sales  commissions.
Although Class B shares are sold without a front-end  sales charge,  Lord Abbett
Distributor pays authorized institutions responsible for sales of Class B shares
a sales  commission of 3.75% of the purchase price.  This payment is made at the
time of sale from Lord Abbett Distributor's own resources.  Lord Abbett has made
arrangements to finance these commission  payments,  which arrangements  include
non-recourse  assignments by Lord Abbett  Distributor to the financing  party of
such distribution and CDSC payments which are made to Lord Abbett Distributor by
shareholders who redeem their Class B shares within six years of their purchase.

The  distribution  fee and CDSC payments  described above allow investors to buy
Class B shares  without a front-end  sales  charge  while  allowing  Lord Abbett
Distributor to compensate authorized  institutions that sell Class B shares. The
CDSC is intended to supplement Lord Abbett  Distributor's  reimbursement for the
commission  payments it has made with  respect to Class B shares and its related
distribution  and financing  costs. The distribution fee payments are at a fixed
rate and the CDSC payments are of a nature that,  during any year, both forms of
payment may not be  sufficient  to  reimburse  Lord Abbett  Distributor  for its
actual expenses. The Fund is not liable for any expenses incurred by Lord Abbett
Distributor in excess of (i) the amount of such  distribution fee payments to be
received by Lord Abbett Distributor and (ii) unreimbursed  distribution expenses
of Lord Abbett  Distributor  incurred in a prior plan year, subject to the right
of the Board of Directors or shareholders to terminate the B Plan. Over the long
term, the expenses incurred by Lord Abbett  Distributor are likely to be greater
than such  distribution  fee and CDSC  payments.  Nevertheless,  there  exists a
possibility  that for a short-term  period Lord Abbett  Distributor may not have
sufficient expenses to warrant reimbursement by receipt of such distribution fee
payments. Although Lord Abbett Distributor undertakes not to make a profit under
the B Plan,  the B Plan is considered a  compensation  plan (i.e.,  distribution
fees are paid regardless of expenses incurred) in order to avoid the possibility
of Lord Abbett  Distributor not being able to receive  distribution fees because
of a temporary timing difference  between its incurring  expenses and receipt of
such distribution fees.

AUTOMATIC  CONVERSION  OF CLASS B  SHARES.  On the  eighth  anniversary  of your
purchase of Class B shares,  those shares will automatically  convert to Class A
shares.  This  conversion  relieves  Class B  shareholders  of the higher annual
distribution  fee that  applies  to Class B shares  under the Class B Rule 12b-1
Plan.  The  conversion  is based on the  relative  net  asset  values of the two
classes,  and no sales  charge or other  charge is imposed.  When Class B shares
convert,  any other Class B shares that were  acquired  by the  reinvestment  of
dividends  and  distributions  will also convert to Class A shares on a pro rata
basis.  The conversion  feature is subject to the continued  availability  of an
opinion of counsel or of a tax ruling  described in "Purchases,  Redemptions and
Shareholder Services" in the Statement of Additional Information.

BUYING  CLASS C SHARES.  Class C shares  are sold at net  asset  value per share
without an initial  sales  charge.  However,  if Class C shares are redeemed for
cash  before  the  first  anniversary  of their  purchase,  a CDSC of 1% will be

<PAGE>

deducted from the redemption proceeds.  That reimbursement charge will not apply
to  shares   purchased  by  the  reinvestment  of  dividends  or  capital  gains
distributions.  The charge will be assessed on the lesser of the net asset value
of the shares at the time of  redemption  or the original  purchase  price.  The
Class C CDSC is paid to the Fund to reimburse  it, in whole or in part,  for the
service and  distribution  fee payments made by the Fund at the time such shares
were sold, as described below.

To determine  whether the CDSC applies to a redemption,  the Fund redeems shares
in the following  order:  (1) shares  acquired by  reinvestment of dividends and
capital gains distributions, (2) shares held for one year or more and (3) shares
held the longest  before the first  anniversary  of their  purchase.  If Class C
shares are exchanged into the same class of another Lord  Abbett-sponsored  fund
and  subsequently  redeemed  before  the  first  anniversary  of their  original
purchase,  the  charge  will be  collected  by the other  fund on behalf of this
Fund's  Class C  shares.  The Fund will  collect  such a charge  for other  Lord
Abbett-sponsored funds in a similar situation.

CLASS C RULE 12B-1  PLAN.  The Fund has  adopted a Class C share Rule 12b-1 Plan
(the "C Plan") under which  (except as to certain  accounts  for which  tracking
data is not available) the Fund pays authorized institutions through Lord Abbett
Distributor  (1) a service  fee and a  distribution  fee, at the time shares are
sold, not to exceed 0.25 and 0.75 of 1%, respectively, of the net asset value of
such shares and (2) at each quarter-end  after the first anniversary of the sale
of shares, fees for services and distribution at annual rates not to exceed 0.25
and 0.75 of 1%  respectively,  of the  average  annual  net asset  value of such
shares  outstanding  (payments with respect to shares not outstanding during the
full  quarter to be  prorated).  These  service  and  distribution  fees are for
purposes  similar to those mentioned above with respect to the A Plan.  Sales in
clause (1) exclude shares issued for reinvested  dividends and distributions and
shares outstanding in clause (2) include shares issued for reinvested  dividends
and distributions after the first anniversary of their issuance.

BUYING CLASS P SHARES.  Class P shares are currently  sold at net asset value to
the trustees of, or  employer-sponsors  with respect to,  pension or  retirement
plans with at least 100 eligible employees (such as a plan under Section 401(a),
401(k)  or 457(b) of the  Internal  Revenue  Code)  which  engage an  investment
professional  providing,  or participating  in an agreement to provide,  certain
recordkeeping, administrative and/or sub-transfer agency services to the Fund on
behalf of the Class P shareholders.

Purchases  and  redemption of Class P shares will be effected at net asset value
by trustees, custodians or employers on behalf of plan participants who will not
deal directly with the Fund.

CLASS P RULE 12B-1  PLAN.  The Fund has  adopted a Class P share Rule 12b-1 Plan
(the "P Plan") which  authorizes the payment of fees to authorized  institutions
(except as to certain  accounts for which  tracking  data is not  available)  in
order to  provide  additional  incentives  for them  (a) to  provide  continuing
information  and investment  services to their Class P shareholder  accounts and
otherwise to encourage  those accounts to remain invested in the Fund and (b) to
sell  Class P shares  of the  Fund.  Under  the P Plan,  in order to save on the
expense of  shareholders'  meetings and to provide  flexibility  to the Board of
Directors,  the Board, including a majority of the outside directors who are not
"interested persons" of the Fund as defined in the Act, is authorized to approve
annual fee  payments  from Class P assets of up to 0.75 of 1% of the average net
asset value of such assets  consisting  of  distribution  and service  fees,  at
maximum annual rates not exceeding 0.50 and 0.25 of 1%,  respectively  (the "Fee
Ceiling").

The Board of Directors has approved  payments from Class P assets to Lord Abbett
Distributor  which uses or passes on to  authorized  institutions  (1) an annual
service fee  (payable  quarterly)  of 0.20 of 1% of the average  daily net asset
value  of  Class  P  shares  serviced  by  authorized  institutions  and  (2)  a
distribution  fee of up to 0.25 of 1% of the  average  daily net asset  value of
Class P shares sold by authorized  institutions that have a satisfactory program
for the promotion of such shares.  Institutions and persons  permitted by law to
receive such fees are "authorized institutions."

Under the P Plan, Lord Abbett  Distributor is permitted to use payments received
to provide continuing  services to Class P shareholder  accounts not serviced by
authorized  institutions and, with Board approval, to finance any activity which
is primarily intended to result in the sale of Class P shares. Any such payments
are subject to the Fee Ceiling.  Any payments  under the P Plan not used by Lord
Abbett  Distributor  in this  manner are passed on to  authorized  institutions.
Authorized  institutions may receive different  compensation with respect to one
class of Fund shares over the other.

6 SHAREHOLDER SERVICES

We offer the following shareholder services:

TELEPHONE  EXCHANGE  PRIVILEGE:  Shares of any class may be exchanged  without a
service   charge:   (a)  for  shares  of  the  same  class  of  any  other  Lord
Abbett-sponsored  fund  except  for (i)  LAEF,  LASF and  LARF and (ii)  certain
tax-free,  single-state series where the exchanging shareholder is a resident of
a state in which such  series is not  offered for sale and (b) for shares of any
authorized  institution's  affiliated  money market fund  satisfying Lord Abbett
Distributor  as  to  certain  omnibus  account  and  other  criteria  (together,
"Eligible Funds").

You or YOUR REPRESENTATIVE  WITH PROPER  IDENTIFICATION can instruct the Fund to
exchange  uncertificated  shares  of a class  (held by the  transfer  agent)  by
telephone.  Shareholders  have this privilege  unless they refuse it in writing.
The Fund will not be liable for following instructions communicated by telephone
that it reasonably believes to be genuine and will employ reasonable  procedures
to confirm that instructions  received are genuine,  including requesting proper
identification  and  recording  all telephone  exchanges.  Instructions  must be
received  by the Fund in Kansas  City  (800-821-5129)  prior to the close of the
NYSE to  obtain  each  fund's  net  asset  value  per  class  share on that day.

<PAGE>

Expedited  exchanges  by  telephone  may be  difficult  to implement in times of
drastic economic or market change.  The exchange privilege should not be used to
take advantage of short-term  swings in the market.  The Fund reserves the right
to  terminate  or limit the  privilege  of any  shareholder  who makes  frequent
exchanges.  The Fund can revoke the privilege for all shareholders upon 60 days'
prior written  notice.  A prospectus  for the other Lord  Abbett-sponsored  fund
selected by you should be obtained and read before an exchange.  Exercise of the
Exchange  Privilege  will be treated as a sale for federal  income tax  purposes
and, depending on the circumstances, a capital gain or loss may be recognized.

SYSTEMATIC WITHDRAWAL PLAN ("SWP"):  Except for Retirement Plans for which there
is no such minimum,  if the maximum offering price value of your  uncertificated
shares is at least $10,000, you may have periodic cash withdrawals automatically
paid to you in either fixed or variable amounts. With respect to Class B shares,
the CDSC will be waived on  redemptions of up to 12% per year of the current net
asset  value of your  account at the time your SWP is  established.  For Class B
shares (over 12% per year) and C shares,  redemption  proceeds due to a SWP will
be derived from the following  sources in the order listed:  (1) shares acquired
by reinvestment of dividends and capital gains, (2) shares held for six years or
more  (Class B) or one year or more  (Class C); and (3) shares  held the longest
before the sixth  anniversary  of their  purchase  (Class B) or before the first
anniversary of their purchase (Class C). For redemptions  over 12% per year, the
CDSC will apply to the entire redemption. Therefore, please contact the Fund for
assistance  in minimizing  the CDSC in this  situation.  Shareholders  should be
careful in  establishing a SWP,  especially to the extent that such a withdrawal
exceeds the annual total return for a class,  in which case,  the  shareholder's
original principal will be invaded and, over time, may be depleted.

DIV-MOVE:  You can  invest  the  dividends  paid on your  account  ($50  minimum
investment) into an existing account within the same class in any Eligible Fund.
The  account  must be either  your  account,  a joint  account  for you and your
spouse,  a single account for your spouse or a custodial  account for your minor
child under the age of 21. Such  dividends are not subject to a CDSC. You should
read the prospectus of the other fund before investing.

INVEST-A-MATIC:  You can make fixed,  periodic investments ($250 initial and $50
subsequent  minimum  investment) into the Fund and/or any Eligible Fund by means
of automatic  money transfers from your bank checking  account.  You should read
the prospectus of the other fund before investing.

RETIREMENT  PLANS:  Lord Abbett makes  available the  retirement  plan forms and
custodial  agreements for IRAs (Individual  Retirement Accounts including Simple
IRAs  and  Simplified   Employee   Pensions),   403(b)  plans  and  pension  and
profit-sharing plans, including 401(k) plans.

HOUSEHOLDING:  A single copy of an annual or semi-annual  report will be sent to
an address to which more than one  registered  shareholder  of the Fund with the
same last name has indicated mail is to be delivered,  unless additional reports
are specifically requested in writing or by telephone.

All correspondence should be directed to Lord Abbett Affiliated Fund, Inc. (P.O.
Box 419100, Kansas City, Missouri 64141; 800-821-5129).

7 OUR MANAGEMENT

Our business is managed by our officers on a day-to-day  basis under the overall
direction of our Board of Directors. We employ Lord Abbett as investment manager
pursuant to a Management  Agreement.  Lord Abbett has been an investment manager
for over 67 years and currently manages approximately $21 billion in a family of
mutual funds and other advisory accounts.  Under the Management Agreement,  Lord
Abbett provides us with investment  management  services and executive and other
personnel, pays the remuneration of our officers and of our directors affiliated
with Lord  Abbett,  provides  us with  office  space and pays for  ordinary  and
necessary office and clerical  expenses  relating to research,  statistical work
and  supervision of our portfolio and certain other costs.  Lord Abbett provides
similar services to twelve other funds having various investment  objectives and
also advises other investment clients. Mr. W. Thomas Hudson, Jr., Executive Vice
President and portfolio  manager of the Fund, is primarily  responsible  for the
day-to-day  management  of the Fund.  Mr. Hudson has been with Lord Abbett since
1982.

We pay Lord  Abbett a monthly  fee based on  average  daily net  assets for each
month.  For the fiscal year ended October 31, 1996,  the fee paid to Lord Abbett
as a percentage of average daily net assets was at the annual rate of .32 of 1%.
In addition, we pay all expenses not expressly assumed by Lord Abbett. Our Class
A, B and C share ratios of  expenses,  including  management  fee  expenses,  to
average net assets for the year ended October 31, 1996 with respect to the Class
A shares,  and for the period  August 1, 1996  through  October 31,  1996,  with
respect to the Class B and C shares was .66, .34 and .33 of 1% respectively.  We
will  not  hold  annual  meetings  of  shareholders  unless  required  to by the
Investment  Company Act of 1940, the Board of Directors or the shareholders with
one-quarter  of the  outstanding  stock  entitled to vote.  See the Statement of
Additional Information for more details.

THE FUND.  The Fund is a  diversified  open-end  management  investment  company
incorporated  under  Maryland law on November 26, 1975.  Its Class A, B, C and P
shares have equal rights as to voting, dividends,  assets and liquidation except
for differences resulting from certain class-specific expenses.

8 DIVIDENDS, CAPITAL GAINS DISTRIBUTIONS AND TAXES

Our net investment  income is paid to shareholders in February,  May, August and
November as dividends. Dividends from net investment income may be taken in cash
or reinvested in additional shares at net asset value without a sales charge. If
you elect a cash  payment  (i) a check will be mailed to you as soon as possible
after the quarterly reinvestment date or (ii) if you arrange for direct deposit,
your  payment will be wired  directly to your bank account  within one day after
the payable date.

Supplemental  dividends  also may be paid on or about  December  31. A long-term
capital gains  distribution  is made if we have net profits during the year from
sales of  securities  which we have held more than one year.  If we realize  net

<PAGE>

short-term  capital  gains,  they also will be  distributed.  Any capital  gains
distribution  will be made in November and may be taken in cash or reinvested in
more shares at net asset value without a sales charge.

Dividends  and  distributions  declared in October,  November or December of any
year to  shareholders of record as of a date in such a month will be treated for
federal income tax purposes as having been received by shareholders in that year
if they are paid before February 1 of the following year.

We intend to continue to meet the  requirements  of Subchapter M of the Internal
Revenue Code. We try to distribute to shareholders all our net investment income
and net realized  capital gains, so as to avoid the necessity of the Fund paying
federal income tax.  Shareholders,  however,  must report  dividends and capital
gains distributions as taxable income.  Distributions derived from net long-term
capital gains which are designated by the Fund as "capital gains dividends" will
be taxable to shareholders as long-term capital gains,  whether received in cash
or shares,  regardless of how long a taxpayer has held the shares. Under current
law, net long-term  capital gains of individuals and  corporations  are taxed at
the rates  applicable  to ordinary  income,  except  that the  maximum  rate for
long-term  capital gains for  individuals is 28%.  Legislation has been proposed
that would have the effect of reducing  the  federal  income tax rate on capital
gains.

Shareholders may be subject to a $50 penalty under the Internal Revenue Code and
we may be required to withhold and remit to the U.S. Treasury a portion (31%) of
any redemption  proceeds  (including the value of shares  exchanged into another
Lord Abbett-sponsored fund), and of any dividend or distribution on any account,
where  the  payee   (shareholder)   failed   to   provide  a  correct   taxpayer
identification number or to make certain required certifications.

We will  inform  shareholders  of the federal  tax status of each  dividend  and
distribution  after the end of each calendar year.  Shareholders  should consult
their tax advisers  concerning  applicable  state and local taxes as well as the
tax  consequences  of gains or losses  from the  redemption  or  exchange of our
shares.

9 REDEMPTIONS

To obtain the proceeds of an  expedited  redemption  of $50,000 or less,  you or
your representative with proper  identification can telephone the Fund. The Fund
will not be liable for following instructions  communicated by telephone that it
reasonably  believes  to be genuine  and will employ  reasonable  procedures  to
confirm that  instructions  received are genuine,  including  requesting  proper
identification,  recording  all telephone  redemptions  and mailing the proceeds
only  to  the  named  shareholder  at  the  address  appearing  on  the  account
registration.

If you do not qualify for the expedited redemption procedures described above to
redeem shares directly,  send your request to Lord Abbett  Affiliated Fund, Inc.
(P.O. Box 419100,  Kansas City,  Missouri 64141) with signature(s) and any legal
capacity of the signer(s)  guaranteed by an eligible  guarantor,  accompanied by
any certificates for shares to be redeemed and other required documentation.  We
will  make  payment  of the net  asset  value of the  shares  as of the date the
redemption order was received in proper form.  Payment will be made within three
days.  The Fund may suspend  the right to redeem  shares for not more than seven
days or longer under unusual  circumstances  as permitted by Federal law. If you
have  purchased  Fund  shares  by check  and  subsequently  submit a  redemption
request, redemption proceeds will be paid upon clearance of your purchase check,
which may take up to 15 days.  To avoid delays you may arrange for the bank upon
which a check was drawn to  communicate  to the Fund that the check has cleared.
Shares  also  may be  redeemed  by the  Fund at net  asset  value  through  your
securities dealer who, as an unaffiliated  dealer, may charge you a fee. If your
dealer receives your order prior to the close of the NYSE and communicates it to
Lord Abbett, as our agent, prior to the close of Lord Abbett's business day, you
will receive the net asset value as of the close of the NYSE on that day. If the
dealer does not communicate such an order to Lord Abbett until the next business
day,  you will  receive  the net asset value as of the close of the NYSE on that
next business day.

Shareholders  who have redeemed  their shares have a one-time right to reinvest,
into another account having the identical  registration,  in any of the Eligible
Funds at the then  applicable  net asset  value (i)  without  the  payment  of a
front-end sales charge or (ii) with  reimbursement  for the payment of any CDSC.
Such  reinvestment  must be made within 60 days of the redemption and is limited
to no more than the amount of the redemption proceeds.

Under certain  circumstances  and subject to 30 days' prior written notice,  our
Board of Directors may authorize  redemption of all of the shares in any account
in which there are fewer than 20 shares.

10 PERFORMANCE

The Fund ended its  fiscal  year on October  31,  1996 with net asset  values of
$13.02  per share for Class A shares,  $13.03  per share for Class B shares  and
$13.02 per share for Class C shares, respectively. Assuming reinvestment of both
the capital gains  distribution and dividends,  the Fund produced a total return
of 23.23%, 10.15% and 10.07% for Class A, B and C shares, respectively.

In the past  year,  stock  market  averages  climbed to new  heights,  against a
background of modest economic growth, low inflation and volatile interest rates.
The strong  performance  of the Fund can be  attributed to several  factors.  We
established an important position in the technology sector early in the year and
used  the  market  correction  in June  and  July to add to  these  holdings  at
attractive  prices.  Additionally,  holdings in consumer  non-durables,  such as
food,  pharmaceutical,  household products and agriculture stocks, were steadily
increased during the year and performed well.

YIELD AND TOTAL  RETURN.  Yield and total return data may, from time to time, be
included in  advertisements  about the Fund. Each class of shares calculates its
"yield"  by  dividing  the  annualized  net  investment  income per share on the

<PAGE>

portfolio  during a 30-day period by the maximum  offering price on the last day
of the  period.  The yield of each class will  differ  because of the  different
expenses  (including actual 12b-1 fees) of each class of shares.  The yield data
represents  a  hypothetical  investment  return on the  portfolio,  and does not
measure investment return based on dividends  actually paid to shareholders.  To
show that  return,  a dividend  distribution  rate may be  calculated.  Dividend
distribution  rate is  calculated  by dividing the  dividends of a class derived
from net investment  income during a stated period by the maximum offering price
on the last day of the period. Yields and dividend distribution rate for Class A
shares reflect the deduction of the maximum  initial sales charge,  but may also
be shown based on the Fund's net asset  value per share.  Yields for Class B and
Class C shares do not reflect the deduction of the CDSC.

"Total return" for the one-, five- and ten-year  periods  represents the average
annual  compounded  rate of return on an investment of $1,000 in the Fund at the
maximum public offering  price.  When total return is quoted for Class A shares,
it includes the payment of the maximum  initial sales charge.  When total return
is  shown  for  Class B and  Class C  shares,  it  reflects  the  effect  of the
applicable  CDSC.  Total return also may be presented for other periods or based
on investments at reduced sales charge levels or net asset value.  Any quotation
of total return not reflecting the maximum sales charge  (front-end,  level,  or
back-end)  would be reduced if such sales charge were used.  Quotations of yield
or total return for any period when an expense  limitation  is in effect will be
greater than if the limitation had not been in effect. See "Past Performance" in
the Statement of Additional Information for a more detailed description.

See "Performance" in the Statement of Additional Information for a more detailed
discussion concerning the computation of the Fund's total return and yield.

THIS  PROSPECTUS  DOES NOT CONSTITUTE AN OFFERING IN ANY  JURISDICTION  IN WHICH
SUCH OFFER IS NOT  AUTHORIZED  OR IN WHICH THE PERSON  MAKING  SUCH OFFER IS NOT
QUALIFIED TO DO SO OR TO ANYONE TO WHOM IT IS UNLAWFUL TO MAKE SUCH OFFER.

NO PERSON IS AUTHORIZED TO GIVE ANY  INFORMATION OR TO MAKE ANY  REPRESENTATIONS
NOT CONTAINED IN THIS PROSPECTUS OR IN SUPPLEMENTAL SALES MATERIAL AUTHORIZED BY
THE  FUND  AND  NO  PERSON  IS  ENTITLED  TO  RELY  UPON  ANY   INFORMATION   OR
REPRESENTATION NOT CONTAINED HEREIN OR THEREIN.

The  performance  of the Class A shares which is shown in the  comparison  below
will be greater  than or less than that shown  below for Class B, C and P shares
based  on the  differences  in  sales  charges  and  fees  paid by  shareholders
investing in the different classes.

Comparison  of change in value of a $10,000  investment in Class A shares in the
Fund, assuming reinvestment of all dividends and distributions and the unmanaged
Standard & Poor's 500 Index.


               The                   The            
               Fund at             Fund at
               Net Asset      Maximum Offering         S&P 500
Date            Value              Price               Index
10/31/86       $10000              $ 9452             $10000
10/31/87        10284                9753              10640
10/31/88        11538               11002              12225
10/31/89        13619               13593              15437
10/31/90        12588               12882              14287
10/31/91        16112               15716              19067
10/31/92        17781               17663              20962
10/31/93        20940               19997              24063
10/31/94        22335               20808              24991
10/31/95        26906               27405              31591
10/31/96        33154               31258              39174
       


Average Annual Total Return
for Class A Shares(3)
1 Year  5 Years 10 Years
16.10%  14.16%  12.07%


Average Annual Total Return
for Class B Shares(4)
   Life of Class
 (8/1/96-10/31/96)
       4.70%


Average Annual Total Return
for Class C Shares(5)
    Life of Class
   (8/1/96-10/31/96)
        9.00%



(1) Data  reflects the  deduction of the maximum  initial  sales charge of 5.75%
applicable to Class A shares.

(2)  Performance  numbers for the  unmanaged  Standard & Poor's 500 Index do not
reflect transaction costs or management fees. An investor cannot invest directly
in the Standard & Poor's 500 Index.

(3) Total return is the percent change in value,  after deduction of the maximum
initial sales charge of 5.75%  applicable to Class A shares,  with all dividends
and distributions reinvested for the periods shown ending October 31, 1996 using
the SEC-required uniform method to compute such return.

(4) The Class B shares were first offered on 8/1/96; performance numbers are not
annualized. Performance reflects the deduction of a 5% CDSC.

(5) The Class C shares were first offered on 8/1/96; performance numbers are not
annualized. Performance reflects the deduction of a 1% CDSC.

 <PAGE>
Investment Manager and Underwriter
Lord, Abbett & Co. and Lord Abbett Distributor LLC
The General Motors Building
767 Fifth Avenue
New York, New York 10153-0203
212-848-1800

Custodian 
The Bank of New York
48 Wall Street 
New York, New York 10286

Transfer Agent and Dividend 
Disbursing Agent
United Missouri Bank of Kansas City, N.A.
Tenth and Grand
Kansas City, Missouri 64141

Shareholder Servicing Agent
DST Systems, Inc.
P.O. Box 419100
Kansas City, Missouri 64141
800-821-5129

Auditors
Deloitte & Touche LLP

Counsel
Debevoise & Plimpton

Printed in the U.S.A.

LAA-1-1097

(11/97)

PROSPECTUS '97

MARCH 1, 1997                                APPLICATION INSIDE
AS SUPPLEMENTED NOVEMBER 10, 1997

Lord Abbett
Affiliated 
Fund


<PAGE>
 
      SUPPLEMENT TO THE STATEMENT OF ADDITIONAL INFORMATION OF LORD ABBETT
                   AFFILIATED FUND, INC. DATED MARCH 1, 1997.


Pension  Class Rule 12b-1 Plan.  As  described in the  Prospectus,  the Fund has
adopted a Distribution Plan and Agreement  pursuant to Rule 12b-1 of the Act for
the Pension  Class (the  "Pension  Plan").  In adopting  the Pension Plan and in
approving its continuance,  the Board of Directors has concluded that there is a
reasonable  likelihood  that the  Pension  Plan will  benefit  the Class and its
shareholders.  The expected benefits include greater sales and lower redemptions
of Class  shares,  which should  allow the Class to maintain a  consistent  cash
flow, and a higher quality of service to shareholders by authorized institutions
than would  otherwise be the case.  The Pension Plan  requires the  directors to
review,  on a quarterly basis,  written reports of all amounts expended pursuant
to the Pension Plan and the purposes for which such  expenditures were made. The
Pension Plan shall continue in effect only if its  continuance  is  specifically
approved at least annually by vote of the directors, including a majority of the
directors who are not  interested  persons of the Fund and who have no direct or
indirect  financial  interest in the  operation  of the  Pension  Plan or in any
agreements related to the Pension Plan ("outside directors"),  cast in person at
a meeting  called  for the  purpose  of voting on the Plan.  The Plan may not be
amended to  increase  materially  above the limits set forth  therein the amount
spent for distribution expenses thereunder without approval by a majority of the
outstanding  voting  securities  of the  applicable  class and the approval of a
majority of the directors,  including a majority of the outside  directors.  The
Pension Plan may be  terminated at any time by vote of a majority of the outside
directors or by vote of a majority of its Class's outstanding voting securities.


SUPPLEMENT EFFECTIVE DATE: NOVEMBER 10, 1997




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