Suppose you have one part-time job . . .

[Pool Hall Ace]

and you would like to pursue another part-time job for extra hours.

There are people in authority who are willing to give me a good reference. My direct supervisor likes my work, but I don't know if it's a good idea to ask her for a reference to work at another company.

I'm already working the maximum number of hours, so I can't go full-time. I have other co-workers who work at more than one job, but they procured the additional job through a family or friend, and I'm not doing that.

Some applications ask if they can contact your supervisor. Any suggestions on how to handle this?