In: Economics
A major factor contributing to the growth in employee-based health insurance in the United States has been:
| 1. | 
 greater than average economic growth leading to increased demand for labor  | 
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| 2. | 
 the tax-free treatment of health insurance as an employee benefit  | 
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| 3. | 
 legislation requiring all firms to provide health insurance to all full-time workers  | 
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| 4. | 
 the long-standing tradition in the United States of providing a generous package of benefits to all workers  |