A couple of decades ago I read about a company in New Hampshire of Vermont that made skiing and hiking outerwear, definitely not hi-tech. They posted everyone's salaries on the wall, including management. If someone wanted a raise he crossed out his old salary and wrote in a new one. The president(?) said no-one abused the system because it was self-limiting it was all there for everyone to read.

I've never seen it anywhere else. It would take real guts to do it in Silicon Valley.