A two-phase study examined the utilization of physician assistants (PA's) and nurse practitioners (NP's) in industrial-occupational health care delivery in nine counties in California. Included among the areas addressed during the study were the following: the health and safety needs of industry, ways in which these needs are currently being met, how PA's and NP's can convince industry to use them to provide health care, the components of an industrial health program, and steps involved in planning and implementing an industrial health program. During the first phase of the study, researchers conducted a literature search and interviewed and administered questionnaires to 18 PA's and NP's employed by California industries. This accumulation of data resulted in the development of models for using NP's and PA's in industrial-occupational health care. In the second phase of the study, information generated from phase 1 was integrated into a questionnaire that was administered to representatives of 18 northern California industries. While all 18 respondents said that their industry would consider developing employee health and safety programs, only 11 of them had ever heard of the NP or the PA. It was concluded that NP's and PA's must do a better job of promoting their profession. (The questionnaires are appended.) (MN)