See the following website:
http://www.abbysguide.com/time-tracking-software/guide/how-t...
"Choose a time tracking system that can be utilized company wide. You want to purchase a system that can be employed over your network in every department. This avoids having information entered more than once as would happen with different software in different departments. With a company wide system, the information is entered once and utilized by every department for various applications. For example, an employee clocks in time for projects, clients, units, etc. with documentation attached and specific notations made. Holidays and special leave time are automatically taken into account. With intranet accessibility, the approver can review and accept, modify or reject the information. The data is then sent to accounts receivable for any invoicing or chargebacks and to payroll. If you are managing projects, schedules are then revised and updated. The macro-financial picture involving general ledger entries is made as well. All this is possible in a coordinated time tracking software package."