I was put out on leave for stress and medical issues by my doctor. It was approved by insurance and I followed policy of informing my core leader and hr department of my time off. Less than a week into time off I received a letter via FedEx stating I was terminated for “violating a policy”. Which policy was not stated and I was locked out of all my accounts including access to my paystubs. This doesn't feel legal. I live in California which I know is an at will state but I was technically out on short term disability/ FMLA which is supposed to protect my job while I'm out.