The micro-firm health insurance hypothesis

The objective of this study is to investigate the ‘micro-firm health insurance hypothesis’, a hypothesis that the greater the percentage of domestic firms that are ‘very small’, i.e. have four or fewer employees, the greater the percentage of the US population that will be without health insurance. The focus of this study is based on the premise that very small firms (as defined), ‘micro-firms’, which constitute 58.6% of all private sector firms in the US, face bargaining-power, financial, and competitive constraints that tend to limit their ability to provide group health insurance benefits to their employees, with the result being that employees at very small firms are relatively more likely than employees at larger firms to be without a health insurance fringe benefit. Weighted Least Squares (WLS) estimates provide strong empirical support for the hypothesis.