There are quite a few studies that support this; higher earners generally work more hours, since their time is more valuable. The only exception is at extremely high income brackets. Minimum wage earners are being paid to show up.

https://www.nber.org/digest/jul06/why-high-earners-work-long...

Companies that are better to work at have generally seen more growth in their stock price:

https://www.glassdoor.com/research/app/uploads/sites/2/2020/...

Doubt these findings will change corporate policies however.