Exhibit 10.5(5)
                              EMPLOYMENT AGREEMENT
 
     This Agreement is made this day of November 16, 2000, by and between SIERRA
HEALTH SERVICES,  Inc., a Nevada Corporation,  of Las Vegas, Nevada (hereinafter
referred to as "Employer"),  and Anthony M. Marlon, M.D. , (hereinafter referred
to as "Employee").
 
                                   WITNESSETH
 
                  WHEREAS,  Employer is a publicly traded company engaged in the
business of providing managed health care services through subsidiary companies;
 
                  WHEREAS,  Employee has expertise  and  experience in providing
                  managed health care services; and,
 
                  WHEREAS,  Employee has made and is expected to  continue to
make a major  contribution  to the profitability, growth and financial strength
of Employer;
 
                  NOW,  THEREFORE,  in  consideration of the mutual promises and
agreements hereinafter set forth, Employer and Employee agree as follows:
 
                                    ARTICLE I
 
                          EMPLOYMENT/DUTIES AND POWERS
 
         1.  Employer  hereby  employs,  engages  and  hires  Employee  as Chief
Executive  Officer,  and  Employee  hereby  accepts  and agrees to such  hiring,
engagement and employment,  subject to the general  supervision and direction of
Employer.
 
      2.  Employee  shall  perform  such duties as are  assigned by the Board of
Directors,  and shall at all times faithfully and to the best of his/her ability
perform  all the duties  that may be  required  of  Employee  to the  reasonable
satisfaction of Employer.  Employee shall exercise only those powers for signing
contracts and  conveyances  in the ordinary  course of business as are expressly
authorized by the Board of Directors.  Employee further agrees to participate in
and  assist in the  development  of  quality  improvement  programs  offered  by
Employer.
 
                                   ARTICLE II
 
                     TERM OF EMPLOYMENT - TERM OF AGREEMENT
 
      1.  The  term of  employment  governed  by  this  Agreement  shall  be for
approximately  a 5 year  period  starting  November  16,  2000  and  terminating
December 31, 2005 subject, however, to prior termination as hereinafter provided
in Article VII. Unless earlier terminated by the mutual agreement of the parties
hereto,  this Agreement shall terminate at December 31, 2005 or, if Employee has
become  entitled  to  any  benefit  under  Article  VII  due to  termination  of
employment  on or before  December  31,  2005,  at such date as Employer  has no
further obligations to Employee under Article VII; provided,  however,  that the
provisions  of Article V and  Article VI (and this  clause of Article  II) shall
survive any termination of this Agreement.
 
 
<PAGE>
 
 
                                   ARTICLE III
 
                             COMPENSATION AND REVIEW
 
      1. Employer  shall pay Employee and Employee shall accept from Employer as
payment for  Employee's  services  hereunder,  compensation  in the form of base
salary in the amount as set forth in Attachment A of this Agreement,  payable at
such  times as are deemed  appropriate  by  Employer,  but not less than twice a
month, and other compensation payable under this Agreement.
 
      2.       (a)    Employer  shall  reimburse  Employee  for all  necessary
and  reasonable  business  expenses
incurred by Employee while performing services pursuant to Employer's direction.
 
               (b) Employee agrees to maintain adequate records of expenses,  in
such detail as Employer may reasonably request.
 
      3. (a) Employee shall also be eligible for those  Employee  fringe benefit
programs,  bonus plans,  and stock  option plans as are made  available to other
employees of the corporation at the same  organizational  level, and as approved
by the Board of Directors.
 
               (b) Except for Employee's  vested benefits under the Supplemental
Executive  Retirement  Plan ("SERP"),  Employer may, at any time and at its sole
discretion,  amend any fringe benefit programs,  bonus programs, or stock option
programs  without  prior notice to Employee  even though such an  amendment  may
decrease the future benefits available under said programs. Notwithstanding this
subparagraph,  Employer shall have the right to  retroactively  amend Employer's
policies concerning vacation and paid time off accruals.
 
      4.  Employee's  performance  shall be reviewed at least  annually based on
established job duties,  goals and objectives and other reasonable  standards as
deemed necessary and appropriate by Employer.
 
 
<PAGE>
 
 
                                   ARTICLE IV
 
                                OTHER EMPLOYMENT
 
               Employee shall devote all of his time, attention,  knowledge, and
skills  solely to the  business  and  interest  of  Employer,  unless  otherwise
authorized  by Employer,  and  Employer  shall be entitled to all of the income,
benefits,  or profits arising from or incident to all work,  work  associations,
services,  or advice of  Employee,  unless  otherwise  authorized  in writing by
Employer.  Employee  shall not,  during the term hereof,  be  interested  in any
manner,  as  partner,  officer,  director,  advisor,  employee  or in any  other
capacity  in any other  business  similar to  Employer's  business or any allied
trade,  or obtain any interest  adverse to  Employer;  provided,  however,  that
Employee may provide advice and  consultation to other entities with the written
approval of  Employer,  and  further  provided,  however,  that  nothing  herein
contained  shall be deemed to prevent or limit the right of  Employee  to invest
any of his/her  surplus  funds in the capital  stock or other  securities of any
corporation whose stock or securities are publicly owned or are regularly traded
on any public exchange, nor shall anything herein contained be deemed to prevent
Employee from  investing or limit  Employee's  right to invest  his/her  surplus
funds in real estate.  Employee  shall  complete a Conflict of Interest  form by
February  15 of each  calendar  year and submit it to Employer  for review.  All
conflicts of interest or any potential  conflicts of interest which arise during
the year must be  immediately  reported to  Employer.  All  conflict of interest
concerns  must be  resolved  to the  reasonable  satisfaction  of  Employer as a
condition of continuation of employment.
 
 
<PAGE>
 
 
                                    ARTICLE V
 
                                BUSINESS SECRETS
 
      1.  Employee  shall not at any time or in any manner,  either  directly or
indirectly, divulge, disclose or communicate to any person, firm or corporation,
in any manner whatsoever, any proprietary or confidential information concerning
any  matter   affecting   or  relating  to  the  business  of  Employer  or  its
subsidiaries, including without limiting the generality of the foregoing, any of
their customers, the prices they obtain from providers or have obtained from the
sale of,  or at  which  they  sell or have  sold,  its  services,  or any  other
information  concerning  the  business of Employer  or its  subsidiaries,  their
manner of operation,  or their plans, if such a disclosure  would be detrimental
to the business interests of Employer or its subsidiaries.
 
      2. If Employee's employment hereunder is terminated by either party at any
time  hereafter,  then  Employee  agrees to turn over to  Employer  all  papers,
documents, working papers, correspondence, memos and any and all other documents
in  Employee's  possession  relating to or  concerning  any matter  affecting or
relating to the business of Employer or its subsidiaries.
 
 
<PAGE>
 
 
                                   ARTICLE VI
 
                            NONCOMPETITION AGREEMENT
 
      1. Employee acknowledges that in Employee's employment hereunder, Employee
will have  continual  contacts with the groups,  members,  and providers who are
covered by or  associated  with the  managed  health  care  programs  offered by
Employer or its  subsidiaries  in Nevada and other states.  In all of Employee's
activities, Employee, through the nature of Employee's work, will have access to
and will acquire confidential information related to the business and operations
of Employer and its subsidiaries,  including, without limiting the generality of
the foregoing,  member and group lists, and confidential information relating to
processes,  plans,  methods of doing  business  and  special  needs of  doctors,
hospitals,  members,  groups,  pharmacies,  or other health care  providers  who
contract with Employer or its subsidiaries.  Employee acknowledges that all such
information  is  the  property  of  Employer  or  its  subsidiaries  solely  and
constitutes  confidential  information  of such  parties;  that  the  disclosure
thereof  would  cause  substantial  loss to the  goodwill  of  Employer  and its
subsidiaries;  that disclosure thereof to Employee is being made only because of
the position of trust and  confidence  which Employee will occupy and because of
Employee's agreement to the restrictions herein contained; that his knowledge of
these matters would enable him, on  termination  of this  Agreement,  to compete
with Employer or its  subsidiaries  in a manner likely to cause Employer and its
subsidiaries  irreparable harm, and disclosure of such matters would,  likewise,
cause such harm; and that the  restrictions  imposed upon Employee  herein would
not prohibit Employee in earning a living.
 
      2. It is  understood  and agreed by Employee and Employer that the essence
of this Employment Agreement is the mutual covenants of the parties herein made,
that the present and future  members and groups of Employer or its  subsidiaries
will remain Employer's or its  subsidiaries'  members and groups during the term
of this Agreement and following its termination for any reason. In consideration
for the  employment and continued  employment of Employee by Employer,  and also
for the amount received by Employee as compensation, Employee hereby irrevocably
warrants, covenants, and agrees as follows:
 
               (a) during the term of  Employee's  employment  and after leaving
the  employment of Employer for any reason,  whether  involuntary  or voluntary,
Employee  will not take any action  whatsoever  which may or might  disturb  any
existing business relationship of Employer or its subsidiaries with any doctors,
groups, members, hospitals,  pharmacies or other health care providers in Nevada
who contract with Employer or its subsidiaries;
 
               (b) for a period of one (1) year after leaving the  employment of
Employer,  Employee  will not  solicit  business  from the  members or groups of
Employer or its  subsidiaries  in Nevada,  or in any manner disrupt any business
relationship  Employer or its subsidiaries  has with any contracted  health care
provider  in  Nevada  with whom  Employee  came in  contact  as an  employee  of
Employer.
 
               (c) for a period of one (1) year after leaving the  employment of
Employer, Employee will not, either directly or indirectly, work for any present
or future  competitors  of Employer  operating in the state of Nevada who in any
manner offer any managed health care programs, insurance coverage, or administer
health care claims for employers.  Such competitors  shall include,  but are not
limited to, HMOs, PPOs, insurance companies,  utilization  management companies,
or third party administrators.
 
      3. The one (1) year period specified in this Article will be tolled during
any period of breach of any of the terms of Article VI by Employee.
 
      4.  Employee  agrees  that in the  event of a  breach  of any term of this
Agreement,  and more particularly,  in the event of a breach of any of the terms
and  provisions of Article VI,  Employer shall be entitled to secure an order in
any suit brought for that purpose to enjoin  Employee from  violating any of the
provisions of the  Agreement  and that,  pending the hearing and the decision on
the  application  for such  order,  Employer  shall be  entitled  to a temporary
restraining  order without  prejudice to any other remedy available to Employer,
all at the expense of Employee should Employer prevail in such action.  Employee
understands  that  the  covenants  of  this  Article  are  the  essence  of this
Employment  Agreement,  and without which no Employment  Agreement with Employee
would be entered into by Employer.
 
      5. The  provisions  of Article VI shall in no event be  construed to be an
exclusive  remedy and such remedy shall be held and  construed to be  cumulative
and not exclusive of any rights or remedies, whether in law or equity, otherwise
available  under the  terms of this  Agreement  or under the laws of the  United
States or the state of Nevada.
 
      6. The covenants and agreements  made by Employee in this Article VI shall
be construed as an agreement independent of any other provision in the Agreement
and the existence of any claim or cause of action by Employee against  Employer,
whether  predicated  on this  Agreement  or  otherwise,  shall not  constitute a
defense to the enforcement by Employer,  by injunctive  relief or otherwise,  of
the  provisions of Article VI. The  invalidity of all or any part of any section
or paragraph of this Article VI shall not render  invalid the  remainder of this
Article or any section hereof.
 
      7. No failure or failures on the part of Employer to enforce any violation
by Employee  of this  Noncompetition  agreement,  shall  constitute  a waiver of
Employer's rights thereafter to enforce all of the terms, covenants,  provisions
and agreements herein contained.
 
 
<PAGE>
 
 
                                   ARTICLE VII
 
                            TERMINATION OF EMPLOYMENT
 
      1.  Termination of employment by either  Employer or Employee shall follow
established Sierra Health Services Policies and Procedures including appropriate
notice, except as otherwise specifically set forth in this Article.
 
      2. Employee may terminate  employment hereunder with sixty (60) days prior
written notice. If Employee shall voluntarily terminate employment, all eligible
separation  compensation  and benefits as are routinely  made available to other
employees of Employer at the same  organizational  level,  shall be paid or made
available to Employee.
 
3. If Employer shall terminate  Employee's  employment  hereunder without cause,
except as otherwise set forth in Paragraph 7 of this Article,  Employee shall be
entitled to twenty-four (24) months salary and all other separation compensation
and benefits as are routinely made  available to other  employees of Employer at
the same organizational level.
 
4. In the event Employee's  employment hereunder terminates for any reason other
than for  cause,  including  those  reasons  set  forth in  Paragraph  6 of this
Article,  Employee and his/her  family shall be eligible to remain covered under
Employer's  health care coverage  program,  at no expense,  for a period of time
equal to  Employee's  length of service or until  Medicare  eligible,  whichever
occurs first, following termination of such employment.
 
               5.  Notwithstanding  any other provision in this Agreement to the
contrary,  Employee  hereby  agrees  that  any  separation  compensation  due to
Employee,  other than accrued vacation, shall be paid out 25% after the first 90
days, 37 1/2% after the first 180 days,  and the remaining 37 1/2% at the end of
365 days,  except in the event of a change in control.  Payment of such  amounts
shall fully release Employer from any and all liability of Employer  relating to
this Agreement or the employment  hereunder.  Any payments of such amounts which
would otherwise be payable after a change in control or arising as a result of a
change in control  shall be made in a lump sum  within  five (5)  business  days
following  the date of the change in  control  and  shall,  except as  otherwise
provided  in any other  benefit  program  or in this  Agreement,  fully  release
Employer  from any and all liability of Employer  relating to this  Agreement or
the employment hereunder.
 
      6. If Employer  shall  terminate  Employee's  employment due to Employee's
conduct that is materially  detrimental  to the Company's  reputation,  business
relationships,  or for  misappropriation of Employer's funds,  Employee shall be
eligible for four (4) weeks  salary and any other  separation  compensation  and
benefits as are routinely made  available to other  employees of Employer at the
same  organizational  level,  as full and final  payment  under this  Agreement.
Payment of such amounts shall fully release  Employer from any and all liability
of Employer relating to this Agreement or the employment hereunder.
 
      7. (a) If Employee is unable to perform  Employee's duties  hereunder,  by
reason of illness or  incapacity  of any kind,  for a period of more than twelve
(12) months in excess of accrued sick leave, Employee's employment hereunder may
be  terminated  by Employer at its  absolute  discretion  with one week of prior
written notice.
 
               (b) If  Employee's  illness or incapacity  shall have ended,  and
Employee  shall have  assumed  Employee's  duties  hereunder,  prior to the date
specified  in the notice of  termination,  Employee  shall be entitled to resume
Employee's employment hereunder as if such notice had not been given.
 
               8. In the event of a change in control of  Employer,  whereby any
"person"  (as  such  term  is used  in  Sections  3(a)(9)  and  13(d)(3)  of the
Securities Exchange Act of 1934) is or becomes the beneficial owner, directly or
indirectly,  of securities of Employer  representing 51% or more of the combined
voting  power of the then  outstanding  securities  of  Employer,  Employee,  at
his/her sole option, shall be entitled to terminate his/her employment hereunder
and will be entitled to a cash amount  equal to (4.0) times  Employee's  current
salary and the target annual bonus for which Employee is eligible in the year of
termination and any other separation  compensation and benefits as are routinely
made available to other employees of Employer at the same organizational  level.
Employee's  right to  terminate  under this  Paragraph 8 may be exercised at the
time of the change in control or at any time  within two years  after the change
in control,  including  upon receipt of any notice that  Employer has elected to
terminate  Employee's  employment  without  cause during such  two-year  period.
Payment of such  amounts  shall be made in a lump sum within  five (5)  business
days  following  termination  of  Employee's  employment  and  shall,  except as
otherwise  provided in any other  benefit  program or in this  Agreement,  fully
release  Employer  from  any and all  liability  of  Employer  relating  to this
Agreement or the  employment  hereunder,  other than benefits under the SERP and
other employee benefit plans of the Company.
 
      9. Anything contained herein to the contrary  notwithstanding in the event
that Employer shall discontinue  operation of Employer other than as a result of
a merger, consolidation or acquisition,  then this Agreement shall terminate and
the provisions of Article VI shall  terminate as of the last day of the month in
which Employer  ceases  operation with the same force and effect as if such last
day of the month were originally set as the termination date hereof.
 
      10. Any amounts  payable  under this  Article VII shall also be payable to
Employee in the event  Employee is  terminated  without  cause during the 90-day
period prior to a Change in Control.
 
      11.Whether  or  not  Employee  becomes  entitled  to  any  payments  under
Paragraphs  1 through  10 of this  Article  VII,  if any  payments  or  benefits
received,  or to be received,  by Employee  (including the vesting of any option
and other non-cash benefits and property),  whether pursuant to any provision of
this Agreement or any other plan,  arrangement or agreement with Employer or any
affiliated  company,  excluding  the  Gross-Up  Payment  described  herein (such
payments and benefits being the "Total Payments"), will be subject to any excise
tax imposed under section 4999 of the Internal  Revenue Code of 1986, as amended
(such excise tax,  including  penalties and interest thereon,  being the "Excise
Tax"),  Employer  shall pay to Employee  an  additional  amount  (the  "Gross-Up
Payment") such that the net amount retained by Employee, after reduction for any
Excise Tax on the Total  Payments and any federal and Excise Tax on the Gross-Up
Payment,  shall be  equal to the sum of (i) the  Total  Payments  plus  (ii) any
deductions  disallowed for federal income tax purposes  because of the inclusion
of the Gross-Up Payment in Executive's  adjusted gross income  multiplied by the
Executive's  highest  marginal rate of federal income  taxation for the calendar
year in which the Gross-Up Payment is to be made.
 
                                  ARTICLE VIII
 
                                EFFECT OF WAIVER
 
      The waiver by either party of a breach of any provision of this  agreement
shall not operate or be construed as a waiver of any subsequent breach thereof.
 
                                   ARTICLE IX
 
                         ACTUAL ATTORNEY'S FEES EXPENDED
 
      Employer and Employee  agree that all  attorneys  fees  expended by either
party in any dispute,  arbitration or litigation  concerning this Agreement will
be paid by the losing party in that dispute, arbitration or litigation.
 
 
<PAGE>
 
 
                                    ARTICLE X
 
                                     NOTICE
 
      Any and all notices referred to herein shall be sufficient if furnished in
writing, sent by registered mail to the representative  parties at the addresses
subscribed below their signatures to this Agreement.
 
                                   ARTICLE XI
 
                                   ASSIGNMENT
 
      The rights,  benefits and  obligations  of Employee  under this  Agreement
shall be assignable,  and all covenants and agreements  hereunder shall inure to
the  benefit  of and be  enforceable  by or  against  Employer's  successors  or
assigns.
 
                                   ARTICLE XII
 
                                ENTIRE AGREEMENT
 
      This Agreement contains the entire Agreement between the parties,  and the
parties hereby agree that no other oral  representations or agreements have been
entered into in connection with this transaction.
 
                                  ARTICLE XIII
 
                                    AMENDMENT
 
      No amendment or modification of this Agreement shall be deemed  effective,
unless or until, it is executed in writing by the parties hereto.
 
 
<PAGE>
 
 
                                   ARTICLE XIV
 
                                    VALIDITY
 
      This Agreement, having been executed and delivered in the State of Nevada,
its validity,  interpretation,  performance and enforcement  will be governed by
the laws of that state.
 
                                   ARTICLE XV
 
                                  SEVERABILITY
 
      It is mutually agreed that all of the terms,  covenants,  provisions,  and
agreements  contained  herein are  severable  and that, in the event any of them
shall be held to be invalid by any  competent  court,  this  Agreement  shall be
interpreted as if such invalid term, covenant,  provision, or agreement were not
contained herein.
 
                                   ARTICLE XVI
 
                                      FORUM
 
      The  parties  hereto  consent  and agree that any  action to enforce  this
Agreement  or any  provision  therein  or any  rights  hereunder  or any  action
relating to the  employment of Employee  with  Employer  shall be brought in the
State of Nevada.
 
 
<PAGE>
 
 
                                                           ARTICLE XVII
 
                                                         INDEMNIFICATION
 
                  Employer  shall  indemnify  Employee  whether  or not  then in
office,   to  the  fullest  extent  provided  for  in  Employer's   Articles  of
Incorporation or Bylaws, as in effect, or as may thereafter be amended, modified
or revised from time to time (collectively, "Employer's Articles"), or permitted
under the law of Nevada or such other state in which  Employer may  hereafter be
domiciled,  against any and all costs, claims,  judgments,  fines,  settlements,
liabilities,  and fees or expenses  (including,  without limitation,  reasonable
attorneys' fees) incurred in connection with any proceedings  (including without
limitation,  threatened  actions,  suits or  investigations)  arising out of, or
relating to, Employee's actions or in actions as a director, officer or employee
of  Employer  at any point  during his  employment  by or  service to  Employer,
whether under this Agreement,  any prior employment agreements or otherwise. The
indemnification  contemplated  under this Section  shall be provided to Employee
unless, at the time  indemnification is sought,  such  indemnification  would be
prohibited under the law of Nevada or of the state in which Employer may then be
domiciled; Employer may rely on the advice of its counsel in determining whether
indemnification is so prohibited.
 
 
<PAGE>
 
 
      IN WITNESS WHEREOF, the parties have executed this Agreement at Las Vegas,
Nevada, on the day of , 20 .
 
SIERRA HEALTH SERVICES, INC.
 
By:______________________________
               President
               P. O. Box 15645
               Las Vegas, NV 89114-5645
 
 
EMPLOYEE
 
By:______________________________
               Anthony M. Marlon, M.D.
               9025 Greensboro Lane
               Las Vegas, NV  89134