I've read that there is a scenario where Jamie gets fired how can I get that
You have to move in with her and approve vending machine, big party, drop pills in water, change the script for employees, and final approval. Then after all that throw her under the bus.
Is that the case if you remove the statue from her
If you take the statue Jamie becomes very fat at the end but if you don't take it she just become fat at the end.
How long does it take to get all the work based events and does the player character have to be under a certain weight for it
It depends on Aubrey weight progression.