Wage reporting when hours change weekly - 10 months and counting

My hours change every week at my new part-time job and I am afraid of reporting wrongly. I do not usually post, so bear with me. The form asks for gross earnings, which I do not see until later. Did anyone get an overpayment notice from a mistake?

Thanks for writing this out. I went through something close to it 10 months ago, and it settled down once I kept a simple log of every call and form.

Report honestly and keep your stubs. An honest small error is much easier to fix than a missing report.