[RL_Quine]

I think you’d struggle to find people who wear ear protection but aren’t exposed to, for example, other hazardous conditions on a mining or building site that are hard to control for.

[duck]

A lot of people that work in an open office wear them.

[SketchySeaBeast]

Yeah, the headphones go on when I get in and only come off if someone is standing there looking at me like they just asked a question.

[stochastic_monk]

Musicians. Drummers, guitarists, trumpeters.

[jandrese]

Maybe recording studio engineers?

[RL_Quine]

True.