Timesheets have been an essential part of any workplace. In the 1950s, lawyers used them to track time dedicated to each client to charge the appropriate amount of money after research showed that lawyers were getting lesser pays compared to doctors.
The American Bar Association is responsible for the logic that one should be paid for every unit made or hour worked. They believed that this would boost income for firms and even boost staff productivity. Now, with technology, timesheet applications have evolved.