Venrock Associates

                                    EXHIBIT 1


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                                    AGREEMENT

         Pursuant to Rule 13d-1(f) promulgated under the Securities Exchange Act
of 1934, as amended, each of the undersigned agree that the Schedule 13D, and
any amendments thereto, filed with respect to the beneficial ownership by the
undersigned of the equity securities of Occupational Health + Rehabilitation
Inc. is being filed on behalf of each of the undersigned. 


                              Venrock Associates


November 19, 1996             By:       /s/ Xxx X. XxXxxxxxxx
                                  -------------------------------------
                                        Xxx X. XxXxxxxxxx
                                        General Partner


                              Venrock Associates II, L.P.


November 19, 1996             By:       /s/ Xxx X. XxXxxxxxxx
                                  -------------------------------------
                                        Xxx X. XxXxxxxxxx
                                        General Partner


November 19, 1996                       /s/ Xxxxx X. Xxxxx
                                  -------------------------------------
                                        Xxxxx X. Xxxxx
                                        General Partner


                                        /s/ Xxxxxxx X. Xxxxx
                                  -------------------------------------
                                        Xxxxxxx X. Xxxxx
                                        General Partner


                                        /s/ Xxxxx X. Xxxxxxxx
                                  -------------------------------------
                                        Xxxxx X. Xxxxxxxx
                                        General Partner


                                        /s/ Xxx. X. XxXxxxxxxx
                                  -------------------------------------
                                        Xxx X. XxXxxxxxxx
                                        General Partner


                                        /s/ Xxx X. Xxxxxxxx
                                  -------------------------------------
                                        Xxx X. Xxxxxxxx
                                        General Partner



                                        /s/ Xxxxxxxxx X. Xxxxxxxxxxx
                                  -------------------------------------
                                        Xxxxxxxxx  X. Xxxxxxxxxxx
                                        General Partner


                                        /s/ Xxxxxxx X. Xxxxxxxxx
                                  -------------------------------------
                                        Xxxxxxx X. Xxxxxxxxx
                                        General Partner


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                                        /s/ Xxxxxxx Sun
                                  -------------------------------------
                                        Xxxxxxx Sun
                                        General Partner


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