When you leave an employer in the US you generally cash-out your PTO rather than getting paid gardening-leave if you have a NDA/non-compete (such niceties in th

When you leave an employer in the US you generally cash-out your PTO rather than getting paid gardening-leave if you have a NDA/non-compete (such niceties in the US? hah!) - at the same time, it isn't unheard of to instead use your PTO to spend time starting with your new employer - so that if things don't work-out (or rather: things going disastrously wrong in the first couple of weeks) you can go back to your old employer and pretend that you were legitimately on holiday somewhere far, far away for that time. Being able to safely "undo" something as major as an employment change is a huge stress-reliever and I think more people should consider doing it. Granted, this isn't the same thing as actively working for both companies. However it's possible the subject of the tweet was someone who was a vendor/contractor at FB or GOOG - or vice-versa - which has certain appearances.