Earlier quoted context omitted.
WARN only applies to notice, not to severance pay. As far as I know, even in a mass layoff situation in CA like this, they are not required to provide any compensation. You could look at it as "hey we're going to fire you in 60 days per WARN, so just stop working now and we'll pay you for that time" but it's not quite the same - they could just notify them, make them work the 8 weeks and not provide any actual severa…
Likely they would rather send people home and pay them than risk theft or sabotage.
Everyday the company is already risking that.