First develops a model of the economic impact of occupational licensure and then estimates the effects of licensure on wages and the division of labor in clinical laboratories. The findings indicate that recent licensure laws have no effect while older, more stringent laws increase the wages and employment of skilled laboratory personnel. (EM)

Analytic labor force participation models which exclude information on worker health care lack explanatory power. If costs of disability can be separated through better information into costs reducible through delivery of health care, and costs more appropriately dealt with through labor market policies, the models will be improved. (KP)