It starts with the leadership and company values. It would be very easy for a boss to see someone working crazy hours and just say “this is great. I’m getting more value from this employee than I’m paying him/her.”
That might lead to bonuses and promotions, which is great. BUT, a company that values its employees can also encourage folks to take breaks, take vacation, and enjoy other parts of their non-work life so they can be more focused and productive in fewer work hours.
In essence, I’m suggesting that leadership create a culture that not only values the work output, but also the worker doing the work. This can help reduce burnout and increase long term employee retention too.