Reporting part-time earnings while on benefits, payroll clerk here

I picked up part-time shifts as a payroll clerk and I am confused about how to report them. The form asks for gross earnings, which I do not see until later. Did anyone get an overpayment notice from a mistake?

Keep everything in writing and save the confirmation numbers. It made the follow-up calls so much easier.

The claimant handbook has worked examples for part-time pay. Mine was clearer than the phone line.