Brings up a good point....
Of course each of us are responsible for keeping our medical up to date. No argument there, but how many employers also insure that its pilots have a valid medical? Out of four of my employers, none ever sent me a reminder and only three required that a current medical be kept on file. Depending upon their Ops manual, the employer may be in violation as well. Actually more than likely unless operating public aircraft in the U.S. One of my old company's pilots was fired for flying without a valid medical. (One flight) Some say it wasn't fair. I'm not too sure about that.