Exhibit 10.2


                             STOCK OPTION AGREEMENT

         MASTEC, INC., a Delaware corporation,  (the "Company"), grants to HENRY
N. ADORNO ("Optionee") an option (the "Option") to purchase One Hundred Thousand
(100,000) shares of Common Stock,  $.10 par value, of the Company (the "Stock").
The exercise  price under the Option  shall be $21.0938 per share of Stock.  The
Option to  purchase  the Stock shall vest on each of December  29,  1998,  1999,
2000, 2001 and 2002 in accordance with the following schedule:



                                                                            
First Year            Second Year           Third Year            Fourth Year           Fifth Year
- ----------            -----------           ----------            -----------           ----------

  20,000                 20,000               20,000                20,000                20,000


         This option is not being  issued  under the  Company's  1994  Incentive
Stock Plan and shall not be treated as an  incentive  stock option as defined in
Section 422A(b) of the Internal Revenue Code of 1986, as amended.

         1. TERM OF OPTION.  The term of this  option  shall end at the close of
business  on the  earliest of the following dates:

         (a) Ten (10) years from the date of grant hereof; or

         (b) Upon  termination of the Optionee's  employment with the Company or
its subsidiaries  for any reason other than retirement,  disability or death, or
upon the Optionee's voluntary termination of employment with the Company; or

         (c)  At  the  expiration  of  three  months  after  termination  of the
Optionee's  employment by reason of retirement or  disability,  provided that if
the Optionee dies within such three month period  sub-paragraph (d) shall apply;
or

         (d)  Upon  the  expiration  of one  year  from the date of death of the
Optionee.

         2.  EXERCISE OF OPTION.  This option may not be exercised (i) at a time
when the exercise  hereof or the issuance or transfer of shares  hereunder would
constitute a violation of any federal or state law or  regulation or any listing
requirements of any national securities  exchange or other appropriate  exchange
on which the Company's securities may be listed; or (ii) until one year from the
date of the grant thereof, as heretofore  provided.  Thereafter the Optionee may
exercise this option in cumulative annual equal installments  during the term of
the option.

         The Optionee  may, for the term of the option:  (a) exercise the option
to purchase  those number of shares  listed under "First Year"  beginning on the
first  year  after the date of the grant  hereof;  (b)  exercise  the  option to
purchase  those number of shares  listed under "Second  Year";  beginning on the
second  year  after the date of the grant  hereof;  (c)  exercise  the option to
purchase  those number of shares  listed under  "Third  Year";  beginning on the
third  year  after the date of the grant  hereof;  (d)  exercise  the  option to
purchase  those number of shares under  "Fourth  Year";  beginning on the fourth
year after the date of the grant hereof; and (e) exercise the option to purchase
those number of shares under "Fifth Year"; beginning on the fifth year after the
date of the grant hereof.

         This option may be  exercised at any time and from time to time in full
or in part  during its term (up to the amount of Stock  then  exercisable)  upon
written notice given by the Optionee or, in the event of the  Optionee's  death,
by the person  designated  in the  Optionee's  will,  or in the  absence of such
designation, by his legal representatives to the Treasurer of the Company, which
shall (i)  specify the number of shares to be  purchased  and (ii)  contain,  if
directed by the Company,  a representation  by the Optionee that such shares are
being acquired for his own account for investment and not with a view to, or for
sale in connection with, the distribution of any part thereof and which shall be
accompanied  by payment in cash of shares of stock  having a fair  market  value
equal to the  option  price for the number of shares  with  respect to which the
option is then exercised.

         An Optionee shall not be, or have any of the rights or privileges of, a
shareholder  of the  Company  in  respect  of any  shares  purchasable  upon the
exercise  of  an  option  unless  and  until  a  certificate   or   certificates
representing such shares shall have been issued by the Company to or in the name
of the Optionee. Certificates representing shares purchased by an Optionee shall
be issued upon receipt by the Company of the full amount of the option price.

         3.  ASSIGNMENT.  This  option  is  not  transferable  by  the  Optionee
otherwise  than  by  will  or the  laws  of  descent  and  distribution,  and is
exercisable,  during  his  lifetime,  only by him.  In the event of death of the
Optionee,  the  person  designated  in his  will,  or in  the  absence  of  such
delegation,  his legal  representative  may  exercise  each  option  held by the
deceased Optionee subject to clause (d) of paragraph 1 and paragraph 2, above.

         4.  RECAPITALIZATION.  In the event of any increase or reduction in the
amount  of  outstanding  shares  of  Stock by  reason  of a stock  split,  stock
dividend,   combination  of  shares  or  recapitalization  occurring  after  the
effective  date hereof the number and class of shares subject to this option and
the option price shall be  correspondingly  adjusted by  Compensation  and Stock
Option Committee of the Board of Directors ("Committee"). No adjustment shall be
made by reason of the distribution of subscription rights on outstanding Stock.

         5. CORPORATE TRANSACTIONS. In the event of a dissolution or liquidation
of the  Company  or a merger or  consolidation  in which the  Company is not the
surviving corporation, the Committee may, at its sole discretion, recommend that
the Board of directors take any of the actions specified in the Plan.

         6.  GOVERNING LAW. This option  agreement  shall be construed, 
administered  and governed in all respects under and by the laws of the State 
of Delaware.

         7.  ADMINISTRATION.  This option shall be exercised in accordance  with
such administration regulations as the Committee shall from time to time adopt.





         DATED: December 29, 1997.


                                    MASTEC, INC.


                                    By:______________________________
                                          Jorge Mas, Chairman of the Board,
                                          President and Chief Executive Officer



ACCEPTED:


- ----------------------------
Henry N. Adorno