Certain characters are referred to as part-time employees. Ms. Casey is one of them. In the potentially two years she has been the wellness director for the severed floor at Lumon, she has only been awake for 108 hours. She has no other function than to provide wellness sessions, and is presumably deactivated (there is no other word for this state of being, yet) the rest of the time.

Since we the audience know that Ms. Casey cannot have an outie, as her outie, Gemma Scout, was declared dead, it is very likely that the woman we know as Ms. Casey cannot leave Lumon property, ever. It is not a great stretch to assume that the dancers who portray the Tempers in the Waffle Party also do not leave Lumon's severed space, though if they are also severed, they would have no memory of the depravity enacted upon them by winners of that coveted prize. Additionally, since the lucky winner who plays the role of Kier is provided with a Cat o’ Nine Tails, they may sustain too many injuries to be able to leave the workspace and be bought off with a note on their car and a Pip’s VIP Card.

Therefore, it is likely that part-time employees are only activated when they are needed, and are otherwise kept in some kind of coma or stasis (or taken to the Testing Floor.