http://www.ssa.gov/pubs/10153.html
Social Security Administration
You might think that because the disability application process is over and your benefits are about to start, you no longer have to worry about Social Security. But what happens if your check doesn't arrive on time? Or what happens to your check if you're away from home for awhile? And what should you do if your condition improves? Or what if you want to go back to work but are afraid of losing your benefits? Knowing the answers to these and other questions now will save you a great deal of time, inconvenience, and maybe some money, later.