In our theoretical model some firms do not offer health insurance to their employees because of large between-firm heterogeneity in expected employee health care costs. Because job turnover rates for healthier employees reduce by less than those for sicker employees when firms offer health...

This paper attempts to improve our understanding of why many small private employers in the US choose not to offer health insurance to their employees. We develop a theory model, simulate its predictions, and assesses whether the model helps explain empirical patterns of firm decisions to offer...