‘It’s not my fault!’
Just like saying ‘it’s not fair,’ announcing you couldn’t possibly be wrong or at fault ends up making you sound defensive and immature. Similarly, claiming ‘that’s not my job’ gives the impression that you’re not a team player. In the workplace, if there’s a problem, don’t back away and avoid blame. Even if the issue really isn’t your fault or your job, you’ll look much smarter if you pitch in and help.