One interesting aspect of this is that they still explicitly expect "synchronous" work, timezones be damned: > We have initially designated 9am to 3pm Pacific Time as “coordination hours” where most employees will be expected to be available for meetings and impromptu communication, regardless of where they are located. This maps to 6am to 12pm in Hawaii, 12pm to 6pm Eastern Time, 5pm to 11pm in the UK, and 6pm to 12…
The toughest is when you need to include folks from SF, London and HK [1]. There's just no good overlap. Either you rotate the suffering or you get disgruntled employees.
One solution is to decide which timezone is most important to you, and then restricting hiring +/- 6 hours from that timezone. Or split up synchronous meetings to two different sessions for two different sides of the world (this might lead to content bifurcation but may work in some instances).
It's a serious quality of life issue that employers ignore or downplay at their peril -- by not respecting timezones, employers are signaling they don't care. Employees on the short end of the stick with respect to timezone feel unimportant and excluded (first hand knowledge of this), especially if it's imposed from above without consultation.
Even small timezone differences are annoying -- I'm in Central Time and people in Eastern Time keep scheduling meetings around my lunchtime. The only way to get around this is to add fake calendar items around lunch time to block off that time.