Thanks for posting your question in the Community, mail6,

Let me get the help that you need in correcting payroll hours in QuickBooks Online.

To get this resolved, you'll need to delete and recreate the paycheck.

To delete paycheck, here's how:

1. Go to Employees in the left navigation menu.
2. Click Payroll tab, then go to Payroll History section.
3. Open the specific paycheck,then in the Payroll details page click the trash bin icon.
4. Type YES, then click Delete.

Once done, recreate the paycheck with the correct payroll hours.

That's it! If you have any other questions concerning payroll, please feel free to reach back out. I'm always here to answer it for you.