Sounds like if you tell your therapist you are worried you will be put in the hospital, and if you don't tell you will be forced to go back to work before you are ready.

Can't you make it very clear that you are not ready to go back to work, that the stress will overload you at this moment. Then on your next visit tell your therapist about what you tried to do, by then enough time should have elapsed so that you can't be put in the hospital against your will.