The workflow role of contractor payroll software is to carry a proposed payment through the actions needed to complete it: collect the required information, obtain authorization, release the payment, track the outcome, and support reconciliation. It gives participants a shared view of what is ready, what is waiting, and who needs to act next.
An invoice marked approved may still be waiting for recipient setup or funding. A payment marked submitted may still be processing. A useful sequence keeps those states distinct, so a project manager, finance operator, and contractor do not each interpret the same status differently. Its value is the connection between a decision and the actual payment result.