When their employer's parking lot has charging spots, presumably yes? Charging during the day will only become more common as more people buy EVs and demand for more charging locations increases.
There's no real "demand" for parking lot charging. It's a nice perk, that's all. EVs whose owners work at employers with nice perks have access to copious off-peak charging at home. My 20-month-old Y has been on a parking lot charger a total of three times in its life.
That's fine if you own a house to charge your car in. So far I've had to live in apartments for one reason or another, and that basically makes EV ownership not feasible. Can't charge at home unless the complex has EV charging (not always, or with big caveats if they do), can't reliably charge at work.
If they can figure out how to have a fourth "nozzle" at every gas station that charges an EV in 10 minutes, I'll use it.
Most apartment dwellers just hit a supercharger for 20 minutes once a week. But yes: if you don't have at-home charging the convenience of an EV takes a big hit. I'm just saying that's not a huge population.
About half of CA lives in apartments. EV makes more sense in urban areas, where the percentage is probably way higher. Fraction of CA homeowners with a Tesla (long range and can use supercharger) is probably not much.