Timesheet

A timesheet (or time sheet) is a method for recording the amount of a worker's time spent on each job. Traditionally a sheet of paper with the data arranged in tabular format, a timesheet is now often a digital document or spreadsheet. The time cards stamped by time clocks can serve as a timesheet or provide the data to fill one. These, too, are now often digital. Timesheets came into use in the 19th century as time books.

Originally developed for an employer to calculate payroll, timesheets can also be used for management accounting. Timesheets may record the start and end time of tasks, or just the duration. It may contain a detailed breakdown of tasks accomplished throughout the project or program. This information may be used for payroll, client billing, and increasingly for project costing, estimation, tracking and management.

Some companies provide web-based timesheet software or services that provide a means to track time for payroll, billing and project management. One of the major uses of timesheets in a project management environment is comparing planned costs versus actual costs, as well as measuring employee performance, and identifying problematic tasks. This knowledge can drive corporate strategy as users stop performing or reassign unprofitable work.

Factory workers may often have a "time card" (also known as punch card) and "punch in" by inserting their card into an automatic timestamp machine (called a time clock or bundy clock) when starting and ending their work shift, though other card technologies such as swipe cards have become more prevalent.

Time tracking can lower costs in three ways: by making payroll processing more efficient, by making costs visible so you can lower them, and by automating billing and invoicing.

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Wikipedia