Hi sedge,

Thanks for posting in the Community! 

There are few a reasons why annual leave is not accruing on an employee. Let's go ahead and check the employee's leave allowance template and see the leave categories enabled for them. 

1. Go to the Payroll tab.
2. Click on the employee's name.
3. Select Leave Allowances. 
4. See Apply the following leave allowance template selected for the employee. 
5. Review if the leave categories enabled or disabled are correct. 

In addition, let's ensure that the Automatically accrues option is selected on Annual leave category. Here's how to check: 

1. Go to the Payroll tab and select Payroll Settings.
2. Select Leave Categories and then Annual Leave.
3. Tick Automatically accrues and then click Save.

To apply the changes made on the employee's profile or settings, we can try to delete the pay run or click Actions and select Recalculate.

Furthermore, I would suggest contacting out support team so we can take a better look with you over a screen share session. 

For your reference, you can also check this article: Set up Leave Allowance Templates. 

Let me know if you have any other questions and we're here to help you. Have a nice day!