July 20, 1971
The first labor contract in the history of the federal government was signed by postal worker unions and the newly re-organized U.S. Postal Service. This contract was made possible by the postal strike of March 1970, in which 200,000 postal workers walked off the job, defying federal law. Prior to that, postal worker salaries started at $6,200 a year, and many postal workers were eligible for food stamps.
