Anything that happenned off the clock is usually not subject to discipline, however, UPS probably will(and should) act on this proactively for the company's future relationship with this customer. As much as I feel like your time off the clock is none of UPS business, I have to ask what the hell were you thinking? You lost your cool in a situation that you are very aware could potentially have an affect on your future ability to make a living for your family and yourself. I am very much the type of person that will not take **** off anyone, but Getting into a fight with a customer, on or off the clock, is just plain stupid!!