Approximately what percentage of the US labor force is employed by firms that have fewer than 100 employees

33.4%

Explanation:

This information was obtained from the Small Business and Entrepreneurship Council and was calculated based on information obtained during 2016. There are approximately 5.6 million small business in the US (that have 500 or less employees), and firms with 100 or less employees represent 98.2% of them = 5.5 million businesses.

This information does not consider businesses that do not have any employees at all, e.g. independent contractors that are self employed but do not employ anyone else.

This number includes all types of businesses, ranging from partnerships, corporations, sole proprietorships and limited liability companies (e.g. 96.4% of corporations have less than 100 employees).

Small businesses account for almost half of the work force, 46.8%.  

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