Part of being a good employee is accepting responsibility. One of the worst mistakes that you can ever make is putting blame on another employee, or simply saying that it is not your fault. Rather than do this, accept responsibility for any actions that you were responsible for. Trust when we say that your boss will be more accepting of you stepping up to the plate and admitting that maybe something went wrong. No one is perfect, and mishaps do happen. When you are able to accept them you can move on and use them as learning experiences.
The 8 Things That You Should Never Say To Your Boss
7. It is Not my Fault