Wage reporting when hours change weekly (Denver)

I picked up part-time shifts as an IT help-desk technician and I am confused about how to report them. This is my first time dealing with any of this. Sometimes my paycheck is late by a week. Do you report when you earned it or when you were paid?

I estimated and then checked my pay stub. When there was a small difference I wrote to the agency to correct it.

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