Technically this is probably illegal in the US as well, but enforcement is very weak. https://www.nlrb.gov/about-nlrb/rights-we-protect/your-rights/employee-ri

Technically this is probably illegal in the US as well, but enforcement is very weak. https://www.nlrb.gov/about-nlrb/rights-we-protect/your-rights/employee-rights https://www.nlrb.gov/about-nlrb/rights-we-protect/your-right...