How do you report hours that vary week to week? after 3 years as a procurement assistant

I picked up part-time shifts as a procurement assistant and I am confused about how to report them. Pay posts on a different day from when I work.

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

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