There are several earning categories in the TD4 Supplementary form that employers must be aware of. Based on the type of compensation given to the employee, some categories may need to be filled in.

Solution
If you want to change the category in which it appears in the TD4, follow the steps below:
- Go to the Earnings Table.
- Select the appropriate earning.
- Go to the drop-down menu under Earning Classification (TD4) and select the appropriate category applicable.