It's more than my job's worth

It's more than my job's worth.

  (British & Australian informal)
something that you say in order to tell someone that you cannot do what they want you to do because you would lose your job if you did I'm sorry, but it'd be more than my job's worth to take any money from you.
See fall down on the job, lie down on the job, be just the job
See also: more, worth