Time tracking is a powerful tool. Look at one job or many. Select one position to study over the course of a month. Pull up a workers time for the whole year. The filtering and search tools help you find what you are looking for.
Sort the data you have on screen. Watch for who still hasn't shown up. Sort by OT hours to see the positions or tasks needing more help. Bring entries with comments for further discovery up to the top of the page.