If your company makes use of both the TimeKeeper and Leave modules, any approved leave will be shown in the TimeKeeper Approvals section.

Step 1: Launch the WorkForce Timekeeper module, click on Approvals from the left-hand side menu, and then on By Employee.

Step 2: Choose the date from, date to, and the employee and click on Refresh. 

Leave taken (in this case, Vacation Leave) will appear under the Vac column, as per the below example: