Agree with Appollyon....
you cannot work if you do not have a license. Now some programs will allow you to work if your license has been issued (ie, they have verification from the board) but you simply do not have it "in hand". Technically, they are not supposed to, but check with your program coordinator about their policy.
if you are post-residency/fellowship training without a license, you do like me...sit around and moonlight until you get your license in your new state and the credentialing process is done.
As an aside, many residents do not realize how long it can take to get a new license and hospital credentials. It is not unheard of in certain states (like Texas, California, New Jersey, New York) to take 6-8 months. I say this because if you don't accept a job until the end of your residency and are moving out of state, you may have to find another income source until the credentialling is completed. At least I knew how long it would take, just didn't find the job I wanted until May.🙄