To carry out this study, personal interviews were conducted with licensing personnel in the geographically diverse states of New York, California, Florida, Illinois, and Texas. The nonprofessional occupations (those requiring not more than two years of post-high school training) examined for licensing requirements in at least one of the five states were practical nurses, plumbers, ophthalmic dispensers, dental hygienists, psychiatric technicians, clinical laboratory personnel, electricians, heating and air conditioning workers, and aircraft mechanics. Some of the factors believed to contribute toward the inhibitory effects of licensing on both job entry and interstate mobility were (1) poor communication between applicants and licensing boards, (2) misleading application forms, (3) subjective and inconsistent training and/or experience requirements, (4) cost of licensure, (5) variable examining procedures, and (6) inadequate reciprocity agreements between states and areas within a given state. Further research directions were recommended. Copies of form letters and the interview guide are in the appendix. (ET)