Few things have remained constant as time clock. While its form has changed over years, its function has remained the same. It is as useful today as it was in the industrial age. When businesses want to make sure the employees record proper amount of time worked and each paycheck is correct, they need to use an employee time clock. The time clock makes it easy for employees to clock in when they come to work. These clocks can produce small cards that the accountants can review, or they can give the employee a clock that is easy to read when they clock in or out.