Signing a Memorandum of Understanding
Many hospitals start the hiring process by providing a physician with a Memorandum of Understanding. This documents usually lays out all of the terms that will be formalized in the final employment agreement. Since the Memorandum of Understanding is not an employment agreement, many physicians mistakenly believe that they can sign without obligating themselves to anything that would affect the employment agreement.
Memorandum of Understandings are the first step in the process of negotiation. It is the document that defines the basic provisions of the agreement. Often times, it will set forth key items such as the term of the agreement, compensation, duties, malpractice insurance, and even restrictive covenants. While it's true that the memorandum is not binding, signing it signals to the hospital or practice that you accept the details of employment as written and they can proceed to use those provisions in the final agreement.
Attempting to negotiate terms of the employment contract after you agreed to such terms in the memorandum puts a physician at a serious disadvantage. You're not barred from negotiating provisions, but you likely lose some credibility if you agree to terms in one document, but reject them in the actual contract.