1
 
                                                                    EXHIBIT 99.1
 
                                    CONSENT
                                       OF
                               SMITH BARNEY INC.
 
The Board of Directors
Olsten Corporation
175 Broad Hollow Road
Melville, New York 11747
 
Members of the Board:
 
     We hereby consent to (i) the inclusion of our opinion letter to the Board
of Directors of Olsten Corporation ("Olsten") as Annex B to the Joint Proxy
Statement and Prospectus of Olsten and Quantum Health Resources, Inc.
("Quantum") relating to the proposed merger of a wholly owned subsidiary of
Olsten with and into Quantum and (ii) references made to our firm and such
opinion in "SUMMARY -- Opinions of Financial Advisors -- Olsten" and "THE
MERGER -- Background of the Merger," "-- Recommendations of the Boards of
Directors; Effects of and Reasons for the Merger -- Olsten" and "-- Opinions of
Financial Advisors -- Olsten." In giving such consent, we do not admit that we
come within the category of persons whose consent is required under, and we do
not admit that we are "experts" for purposes of, the Securities Act of 1933, as
amended, and the rules and regulations promulgated thereunder.
 
                                          By: /s/ SMITH BARNEY INC.
 
                                            ------------------------------------
                                            SMITH BARNEY INC.
New York, New York
May 30, 1996