Key facts, figures, and trends among U.S. labor unions
Candid
SEPTEMBER 13, 2021
The IRS recognizes 45,387 501(c)(5) entities, which include both unions and agriculture/horticultural organizations. The national arm of the National Association of Letter Carriers (as opposed to any of the locals) is by far the largest union in terms of revenue, bringing in $1.78 Unions, charity and voluntarism.
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