It’s complicated. I work in a global business in every time zone so work/life balance is difficult
A good friend of mine is in a billion dollar firm as CIO solely based in USA and doesn’t even need to check email after 5pm on Friday until Monday morning
This will be very dependent on sites, size, operation times (7x24 or 8x5), global diversity and company culture
And BTW he earns more than I do so the rare gems are out there