A staffing company can pay a worker correctly and still miss revenue. The loss often happens after time is captured but before the client invoice is sent.
Why the records stop matching
The timesheet may sit in one system, the client approval in an email, the bill rate in a contract, and the invoice line in another system. A location change, late approval, old bill rate, or missed overtime rule can break the chain.
Check one shift across five records
Start with the worked hours, client approval, job and location, bill rate and overtime rule, and final invoice line. If one value is missing or different, the invoice needs a check.
Make the check before invoice day
The earlier the team sees the exact shift and missing record, the easier it is to fix. That protects the invoice deadline and keeps paid hours from moving to a later invoice cycle.