In a leaked memo, Shopify CEO Tobi Lütke put limits on employees having side hustles, saying Shopify requires ‘unshared attention’::Shopify CEO Tobi Lütke discourages employees from side hustles in company memo, saying their jobs require their undivided attention.
Not terribly much time, by the looks of it. For example, look at the list of boards Disney CEO Bob Iger sits on:
https://www.wsj.com/market-data/quotes/DIS/company-people
Publicly traded companies should have their board compensation made public. Iger sits on a lot of philinthropic organizations; I think 501c3’s will have that reported to the IRS. But he probably has a day long meeting for each once or twice a year.
Edit: here’s Bloomberg Philinthropic’s IRS filling (one of the boards Iger sits on). $10.9k per board member. https://projects.propublica.org/nonprofits/organizations/205602483