I’m here to help so you can make this job active again, @acillc.

You’re unable to make the job active once the associated customer is inactive in QuickBooks Desktop. Thus, it's greyed out and you can’t uncheck the box. I suggest activating the customer first so you can make the job active, too.

Here’s how:

1. Select the Customers menu, then Customer Center.
2. Under Customer & Jobs, go to the dropdown menu and filter to All Customers.
3. Select the customer name of the said job. As mentioned above, you’ll see an X sign beside the name.
4. Remove the checkmark in the Customer is inactive box.
5. Press OK.
   
6. Select Yes in the question Do you want to activate the subs as well? You can choose No if there are other jobs associated with this customer.
7. Click the job you want to activate, then uncheck the box.
   
8. Select OK after.

You might want to visit this reference to learn more about tracking payroll expense by job: Set up job costing and item tracking. Once you set up this feature, QuickBooks will automatically track cost by job for your company payroll expenses.

I'll be right here to help if you need more assistance with your job. Have a great day and always take care!