UNDERWRITING AGREEMENT
     THIS AGREEMENT,  is entered into on this __ day of June, 1999, by and among
ALLSTATE LIFE INSURANCE COMPANY, ("Allstate Life" or "Company") a life insurance
company  organized  under the laws of the State of  Illinois,  on its own and on
behalf  of  the  ALLSTATE  FINANCIAL  ADVISORS  SEPARATE  ACCOUNT  I  ("Separate
Account"),  a separate account established pursuant to the insurance laws of the
State of Illinois,  and ALLSTATE  LIFE  FINANCIAL  SERVICES,  INC.,  ("Principal
Underwriter"), a corporation organized under the laws of the state of Delaware.
                                    RECITALS
     WHEREAS,  Company  proposes to issue to the public certain variable annuity
contracts identified in the Attachment A ("Contracts"); and
     WHEREAS,  Company, by resolution adopted on April 30, 1999, established the
Separate Account for the purpose of issuing the Contracts; and
     WHEREAS,  the  Separate  Account  is  registered  with the  Securities  and
Exchange  Commission  ("Commission")  as  a  unit  investment  trust  under  the
Investment  Company Act of 1940,  as amended  ("Investment  Company  Act");  and
WHEREAS,  the  Contracts  to be  issued  by  Company  are  registered  with  the
Commission under the Securities Act of 1933, as amended  ("Securities Act"), and
the  Investment  Company Act (File Nos:  333-77605 and  811-09327) for offer and
sale to the public and otherwise are in compliance with all applicable laws; and
     WHEREAS,   Principal  Underwriter,  a  broker-dealer  registered  with  the
Commission  under the  Securities  Exchange Act of 1934, as amended,  ("Exchange
Act"),  and a member of the National  Association  of Securities  Dealers,  Inc.
("NASD"),  proposes to act as principal  underwriter on an agency (best efforts)
basis in the marketing and distribution of said Contracts; and
     WHEREAS, Company desires to obtain the services of Principal Underwriter as
an underwriter and  distributor of said Contracts  issued by Company through the
Separate Account;
     NOW  THEREFORE,  in  consideration  of the  foregoing,  and  of the  mutual
covenants  and  conditions  set forth  herein,  and for other good and  valuable
consideration,  the Company, the Separate Account, and the Principal Underwriter
hereby agree as follows:
1.   AUTHORITY AND DUTIES
     (a)  Principal  Underwriter will serve as underwriter and distributor on an
          agency  basis for the  Contracts  which will be issued by the  Company
          through the Separate Account.
     (b)  Principal Underwriter will use its best efforts to provide information
          and   marketing   assistance   to   licensed   insurance   agents  and
          broker-dealers on a continuing basis.  However,  Principal Underwriter
          shall be responsible  for compliance  with the  requirements  of state
          broker-dealer  regulations  and the  Exchange  Act as each  applies to
          Principal  Underwriter in connection with its duties as distributor of
          said  Contracts.  Moreover,  Principal  Underwriter  shall conduct its
          affairs in accordance with the By-Laws and Conduct Rules of the NASD.
     (c)  Subject to agreement with the Company, Principal Underwriter may enter
          into selling agreements with broker-dealers  which are registered with
          the  Commission  under the Exchange Act,  members of the NASD,  and/or
          authorized  by applicable  law or exemptions to sell variable  annuity
          contracts  issued by Company  through the Separate  Account.  Any such
          contractual  arrangement is expressly made subject to this  Agreement,
          and Principal  Underwriter will at all times be responsible to Company
          for  supervision  of  compliance  with  the  federal  securities  laws
          regarding distribution of Contracts.
2.   WARRANTIES
     (a)  The Company represents and warrants to Principal Underwriter that:
          (i)  Registration  Statement  on Form  N-4 for  each of the  Contracts
               identified in Attachment A have been filed with the Commission in
               the form previously  delivered to Principal  Underwriter and that
               copies of any and all  amendments  thereto  will be  forwarded to
               Principal  Underwriter  at the  time  that  they are  filed  with
               Commission;
          (ii) The  Registration   Statements  and  any  further  amendments  or
               supplements thereto will, when they become effective,  conform in
               all material  respects to the  requirements of the Securities Act
               and the Investment  Company Act, and the rules and regulations of
               the  Commission  under such Acts, and will not contain any untrue
               statement  of a material  fact or omit to state a  material  fact
               required to be stated therein or necessary to make the statements
               therein   not   misleading;    provided,   however,   that   this
               representation  and warranty  shall not apply to any statement or
               omission made in reliance upon and in conformity with information
               furnished  in  writing  to  Company  by   Principal   Underwriter
               expressly for use therein;
          (iii)The  Company  is  validly  existing  as a  stock  life  insurance
               company in good standing under the laws of the State of Illinois,
               with power to own its  properties  and  conduct  its  business as
               described in the Prospectus  relating to the Contracts,,  and has
               been duly  qualified  for the  transaction  of business and is in
               good  standing  under the laws of each  jurisdiction  in which it
               owns or leases properties, or conducts any business;
          (iv) The  Contracts  to be  issued  by the  Company  and  through  the
               Separate Account and offered for sale by Principal Underwriter on
               behalf  of the  Company  hereunder  have  been  duly and  validly
               authorized and, when issued and delivered with payment  therefore
               as  provided  herein,  will be duly and  validly  issued and will
               conform to the  description  of such  Contracts  contained in the
               Prospectuses relating thereto;
          (v)  Those  persons  who  offer  and  sell  the  Contracts  are  to be
               appropriately  licensed and/or appointed to comply with the state
               insurance laws;
          (vi) The  performance  of this Agreement and the  consummation  of the
               transactions  contemplated by this Agreement will not result in a
               violation  of any of  the  provisions  of or  default  under  any
               statute,  indenture,  mortgage,  deed of trust, note agreement or
               other  agreement or  instrument to which Company is a party or by
               which Company is bound (including Company's Charter or By-laws as
               a stock life insurance company,  or any order, rule or regulation
               of any court or governmental  agency or body having  jurisdiction
               over Company or any of its properties);
          (vii)There  is no  consent,  approval,  authorization  or order of any
               court  or   governmental   agency  or  body   required   for  the
               consummation by Company of the transactions  contemplated by this
               Agreement,  except such as may be required under the Exchange Act
               or state  insurance or  securities  laws in  connection  with the
               distribution of the Contracts; and
          (viii) There are no material legal or governmental proceedings pending
               to which  Company or the Separate  Account is a party or of which
               any  property of Company or the  Separate  Account is the subject
               (other  than  as set  forth  in the  Prospectus  relating  to the
               Contracts,  or  litigation  incidental  to the  kind of  business
               conducted  by the  Company)  which,  if  determined  adversely to
               Company,  would  individually or in the aggregate have a material
               adverse effect on the financial  position,  surplus or operations
               of Company.
     (b)  Principal Underwriter represents and warrants to Company that:
          (i)  It is a broker-dealer  duly registered with the Commission  under
               the Exchange Act, is a member in good  standing of the NASD,  and
               is in  compliance  with the  securities  laws in those  states in
               which it conducts business as a broker-dealer;
          (ii) As principal  underwriter,  it shall permit the offer and sale of
               Contracts  to the  public  only by and  through  persons  who are
               appropriately   licensed  under   securities  laws  and  who  are
               appointed  in writing by the Company to be  authorized  insurance
               agents  unless  such  persons  are  exempt  from   licensing  and
               appointment requirements;
          (iii)The  performance  of this Agreement and the  consummation  of the
               transactions  herein  contemplated will not result in a breach or
               violation of any of the terms or  provisions  of or  constitute a
               default under any statute,  indenture,  mortgage,  deed of trust,
               note  agreement  or  other   agreement  or  instrument  to  which
               Principal   Underwriter   is  a  party  or  by  which   Principal
               Underwriter is bound  (including the Certificate of Incorporation
               or  By-laws  of  Principal  Underwriter  or any  order,  rule  or
               regulation  of any court or  governmental  agency or body  having
               jurisdiction over either Principal  Underwriter or its property);
               and
          (iv) To the  extent  that  any  statements  made  in the  Registration
               Statements, or any amendments or supplements thereto, are made in
               reliance  upon  and  in  conformity   with  written   information
               furnished to Company by Principal  Underwriter  expressly for use
               therein,  such statements will, when they become effective or are
               filed  with the  Commission,  as the case may be,  conform in all
               material  respects to the  requirements  of the Securities Act of
               1933 and the rules and regulations of the Commission  thereunder,
               and will not contain any untrue  statement of a material  fact or
               omit to state any material fact required to be stated  therein or
               necessary to make the statements therein not misleading.
3.   BOOKS AND RECORDS
     (a)  Principal  Underwriter  shall keep,  in a manner and form  approved by
          Company  and in  accordance  with  Rules  17a-3  and  17a-4  under the
          Exchange Act,  correct  records and books of account as required to be
          maintained  by  a  registered   broker-dealer,   acting  as  principal
          underwriter,  of all  transactions  entered  into on behalf of Company
          with  respect  to  its  activities  under  this  Agreement.  Principal
          Underwriter shall make such records and books of account available for
          inspection by the Commission,  NASD, and any other governmental agency
          or body having  jurisdiction over Principal  Underwriter,  and Company
          shall have the right to inspect,  make copies of or take possession of
          such records and books of account at any time upon demand.
     (b)  Subject to applicable  Commission or NASD  restrictions,  Company will
          send  confirmations  of  Contract  transactions  to  Contract  Owners.
          Company  will make such  confirmations  and  records  of  transactions
          available to Principal  Underwriter  upon  request.  Company will also
          maintain Contract Owner records on behalf of Principal Underwriter, to
          the extent permitted by applicable securities laws.
4.   SALES MATERIALS
     (a)  After  authorization to commence the activities  contemplated  herein,
          Principal  Underwriter will utilize the currently effective prospectus
          relating  to  the  Contracts  in  connection  with  its  underwriting,
          marketing  and  distribution  efforts.  As to  other  types  of  sales
          material,  Principal  Underwriter  hereby  agrees and will require any
          participating  or selling  broker-dealers  to represent and agree that
          they will use only sales  materials which have been authorized for use
          by Company,  which  conform to the  requirements  of federal and state
          laws and regulations,  and which have been filed, where required, with
          the appropriate regulatory authorities, including the NASD.
     (b)  Principal  Underwriter  will  not  distribute  any  prospectus,  sales
          literature  or any other  printed  matter or material  relating to the
          Contracts in the underwriting and distribution of the Contracts if, to
          the knowledge of Principal Underwriter, any of the foregoing misstates
          the  duties,   obligation  or  liabilities  of  Company  or  Principal
          Underwriter.
5.   COMPENSATION
     (a)  Company  agrees  to pay  Principal  Underwriter  for  direct  expenses
          incurred on behalf of Company. Such direct expenses shall include, but
          not be limited  to,  the costs of goods and  services  purchased  from
          outside vendors, travel expenses and state and federal regulatory fees
          incurred on behalf of Company.
     (b)  Principal  Underwriter  shall present a statement after the end of the
          quarter showing the  apportionment of services rendered and the direct
          expenses incurred. Settlements are due and payable within thirty days.
6.   PURCHASE PAYMENTS
Principal  Underwriter  shall  arrange  that all orders,  purchase  payments and
applications  collected on the sale of the  Contracts  are promptly and properly
transmitted  to Company for  immediate  allocation  to the  Separate  Account in
accordance  with the procedures of Company and the  directions  furnished by the
purchasers of such Contracts at the time of purchase.
7.   UNDERWRITING TERMS
     (a)  Principal Underwriter makes no representations or warranties regarding
          the number of  Contracts  to be sold by  licensed  broker-dealers  and
          registered  representatives of broker-dealers or the amount to be paid
          thereunder.  Principal  Underwriter does,  however,  represent that it
          will  actively  engage  in  its  duties  under  this  Agreement  on  a
          continuous  basis while there are  effective  registration  statements
          with the Commission.
     (b)  Principal  Underwriter  will use its best  efforts to ensure  that the
          Contracts shall be offered for sale only by registered  broker-dealers
          and  their  registered  representatives  (who  are  duly  licensed  as
          insurance  agents) on the terms  described in the currently  effective
          prospectus describing such Contracts.
     (c)  It is  understood  and agreed that  Principal  Underwriter  may render
          similar services to other affiliated  companies in the distribution of
          other variable contracts.
     (d)  The Company will use its best efforts to assure that the Contracts are
          continuously  registered with the Commission  under the Securities Act
          (and  under any  applicable  state  "blue  sky"  laws) and to file for
          approval under state insurance laws when necessary.
     (e)  The  Company  reserves  the right at any time to  suspend or limit the
          public  offering of the  Contracts  upon one day's  written  notice to
          Principal Underwriter.
8.   LEGAL AND REGULATORY ACTIONS
     (a)  The Company agrees to advise Principal Underwriter immediately of:
          (i)  any request by the Commission  for amendment of the  Registration
               Statement  or  for   additional   information   relating  to  the
               Contracts;
          (ii) the issuance by the  Commission of any stop order  suspending the
               effectiveness  of  the  Registration  Statement  relating  to the
               Contracts or the initiation of any  proceedings for that purpose;
               and
          (iii)the  occurrence  of any known  material  event which makes untrue
               any statement made in the Registration  Statement relating to the
               Contracts  or which  requires  the making of a change  therein in
               order to make any statement made therein not misleading.
     (b)  Each of the undersigned  parties agrees to notify the other in writing
          upon  being   apprised   of  the   institution   of  any   proceeding,
          investigation or hearing involving the offer or sale of the Contracts.
     (c)  During any legal action or inquiry,  Company will furnish to Principal
          Underwriter  such information with respect to the Separate Account and
          Contracts in such form and signed by such of its officers as Principal
          Underwriter   may  reasonably   request  and  will  warrant  that  the
          statements therein contained when so signed are true and correct.
9.   TERMINATION
     (a)  This Agreement will terminate automatically upon its assignment.
     (b)  This Agreement shall  terminate  without the payment of any penalty by
          either party upon sixty (60) days' advance written notice.
     (c)  This  Agreement  shall  terminate  at the option of the  Company  upon
          institution of formal proceedings against Principal Underwriter by the
          NASD  or  by  the  Commission,  or if  Principal  Underwriter  or  any
          registered representative thereof at any time:
          (i)  employs any device,  scheme,  artifice,  statement or omission to
               defraud any person;
          (ii) fails to account and pay over  promptly to the Company  money due
               it according to the Company's records; or
          (iii) violates the conditions of this Agreement.
10.  INDEMNIFICATION
The Company agrees to indemnify Principal  Underwriter for any liability that it
may incur to a Contract owner or party-in-interest under a Contract:
     (a)  arising out of any act or  omission in the course of or in  connection
          with rendering services under this Agreement; or
     (b)  arising out of the  purchase,  retention  or  surrender of a contract;
          provided,  however,  that the  Company  will not  indemnify  Principal
          Underwriter  for any such  liability  that  results  from the  willful
          misfeasance, bad faith or gross negligence of Principal Underwriter or
          from the  reckless  disregard  by such  Principal  Underwriter  of its
          duties and obligations arising under this Agreement.
11.  GENERAL PROVISIONS
     (a)  This Agreement shall be subject to the laws of the State of Illinois.
     (b)  This  Agreement,   along  with  any  Schedules   attached  hereto  and
          incorporated herein by reference,  may be amended from time to time by
          the mutual agreement and consent of the undersigned parties.
     (c)  In case any provision in this Agreement  shall be invalid,  illegal or
          unenforceable,  the  validity,  legality  and  enforceability  of  the
          remaining  provisions  shall not in any way be  affected  or  impaired
          thereby.
     IN WITNESS WHEREOF,  the undersigned  parties have caused this Agreement to
be duly executed, to be effective as of June 25, 1999.
ALLSTATE LIFE INSURANCE COMPANY
(and ALLSTATE FINANCIAL ADVISORS SEPARATE ACCOUNT I)
BY:      ____________________________                ________________________
         President and Chief Operating Officer       Date
ALLSTATE LIFE FINANCIAL SERVICES, INC.
BY:      ____________________________                ________________________
         President and Chief Executive Officer       Date
                             UNDERWRITING AGREEMENT
                                  Attachment A
"Contracts"
Form #
"Select Directions"  Flexible Premium Deferred Variable Annuity Contract LU 4518
(and state variations)