The risk that you take as an at-will employee or employer is that at times you may be fired without a back-up plan so you go back to scratch visiting office after office looking for a new position. The same with an employer when your employee decides to leave, you are left with a position that you are not sure when it will be filled and if with the right person. In this case, where at-will employment lawyers do not have a say, you will have to deal with your losses and work them out as they come, being that you chose the at-will agreement for yourself.