SOR - Contractor

If you are a contractor and are issued a SOR, are you determined suspended or revoked at the time the FSO has you sign for the SOR, or are you classified as denied/revoked after you respond to the SOR and it comes back that they upheld decision to deny/revoke?

Am I fired at the time the SOR is given to me?
(If I get a SOR)

Or am I fired after I reply and decision is made?

I just need to see if I should ask for a Government waiver at the time a SOR is issued or wait until after the SOR is decided upon.

(If I receive a SOR and cannot mitigate to receive favorable)