"only one union representing a group of employees at a time" is a rule enforced by government, not a natural property of unions. The NLRA process [1] is predica

"only one union representing a group of employees at a time" is a rule enforced by government, not a natural property of unions. The NLRA process [1] is predicated on a single, exclusive representative organization for any given unit of workers. It didn't always used to be this way, before such rules, there were times where multiple competing unions historically had ground industry to a halt because it was impossible for a company to make a contract that would apply to everyone and get the business back running. I find the NLRA's solution very elegant because it both improves the democratic nature of unions and helps get industry moving. [1] https://www.law.cornell.edu/uscode/text/29/159 https://www.law.cornell.edu/uscode/text/29/159