ETA: there are very real reasons big companies have reconfigured workspaces and it isn’t about worker efficiency studies or even fitting more people into a space, but about taxes.
> employees pay income tax
Generally, it’s the state where you work.
It can be complicated when you live in one state and work in another.
But the location of your corporate office is absolute irrelevant for where an employee pays taxes.
The employer’s HQ generally has no effect, independently of it being a worksite for many employees.
So all non-CA employees have less of a tax burden as a result of the HQ relocation.
> How do you get health insurance?
Through my employer, like many employees.
> Does your company have an office in your state?
Yes, though I've not seen the inside of it with my eyes since March.
> If not, do they give you Californi-based coverage, with most providers being out-of-network?
While your question was conditional on the office, no, the CA-specific health plans are only available for CA employees. Non-CA employees have a different set of options. (Sadly: I was rather fond of Kaiser.)
Non-Quals are prorated
ISOs are taxed in state where exercised
