In UK playing commercial radio at work is a breach of copyright if anyone else can hear. Police departments were notably targeted by copyright associations.

They similarly targeted people like solo garage mechanics: they work alone with commercial radio playing in their private workshop ... but if a customer comes up then they're technically breaching public broadcast provisions. So, you find solo workers and send a copyright association enforcer to see them ... if they can hear a radio (or other music, even on a properly licensed TV) from a publicly accessible area then they can successfully sue!

I used to work in a shop, the copyright people would ring, there'd be 10s of silence on the line presumably as they try and catch us listening to music. We used CC0 and other similar music but the repeated suggestions 'you have to have a license to play any music' made us fear being sued, so we stopped.