From Andrew Pecak:
TimeSheet Calculator consists of a pair of utilities that calculate time.
The first tool is for payroll staff or employees who maintain time sheets every day. Using a built-in punch clock, you enter the times that you start and finish work. TimeSheet maintains a grand total of the hours you're clocked in. It calculates your pay rate with a customized overtime formula. TimeSheet then calculates your regular salary, overtime earnings, and total earnings. Printing of the current time sheet is also available.
The second is a time calculator that allows you to add or subtract hours, minutes, and seconds. There's no need to convert minutes to decimals, perform the calculation, then convert the result back to minutes. With the time calculator, you just enter your hours and minutes, and the rest is done for you. Data entered can be checked in a register tape window.