Managers have the power to change this by flipping the script and actively protecting employees’ nonwork time and identities.
I think the authors made the research easy to understand by using examples like late-night emails and requests for leave. Their main point seems to be that employees cannot fix this culture just by managing their time better. Managers also have to change what gets rewarded. I’m still wondering how employees could push for those changes when their manager believes constant availability is necessary.