если там обобщенно - то payroll system. А если не обобщенно (payroll system - более широкое понятие, чем начисление зп), то
payroll calculation system

--------------------------------------------------
Note added at 4 hrs (2010-10-15 16:08:30 GMT)
--------------------------------------------------

In a company, payroll is the sum of all financial records of salaries for an employee, wages, bonuses and deductions. In accounting, payroll refers to the amount paid to employees for services they provided during a certain period of time
http://en.wikipedia.org/wiki/Payroll

--------------------------------------------------
Note added at 4 hrs (2010-10-15 16:09:21 GMT)
--------------------------------------------------

Consider, as an example, a payroll calculation system that
depends on an expensive and slow employee database management
system (see Figure 1). The actual payroll calculation
algorithm is relatively fast, can be run on the developer’s
workstation, and changes frequently in response to
business requirements.
http://www.cs.washington.edu/homes/mernst/pubs/test-factorin...

--------------------------------------------------
Note added at 4 hrs (2010-10-15 16:10:02 GMT)
--------------------------------------------------

Mr. Dufendach passed out a rational for moving to a twice-a-year disbursement schedule and an example of his district’s payroll calculation system for an educator who completed a 2% cluster.
http://www.doe.state.de.us/csa/profstds/minutesfiles/PSB5307...

--------------------------------------------------
Note added at 4 hrs (2010-10-15 16:10:57 GMT)
--------------------------------------------------

In the absence of an automated payroll calculation system which can be relied upon to accurately calculate net pay, the amount which can be disbursed from a petty cash account for this purpose is limited to 90% of the computed net pay due to the employee.
http://www.ofm.wa.gov/policy/85.50.htm

Обратите внимание, сайты госучреждений США!

--------------------------------------------------
Note added at 4 hrs (2010-10-15 16:11:59 GMT)
--------------------------------------------------

Human Resource Management System
Leave Application System
Handles the approval process of applying leaves by staff.
Monthly PAYROLL CALCULATION SYSTEM
Handles calculations of the monthly payroll; which is sent to the bank for automated payment.
Staff Training Tracking System
Handles any Training request(s) from staff and displays a directory of training courses available for staff to choose. Also keeps a record of which staff went for which training.
http://augmentware.com/

--------------------------------------------------
Note added at 4 hrs (2010-10-15 16:14:10 GMT)
--------------------------------------------------

Payroll Calculations. The City has a complex payroll calculation system. Employees can perform certain types of work that are considered “special rate hours.” If salaried, this wage is in addition to their salary.
http://74.6.238.254/search/srpcache?ei=UTF-8&p="payroll calc...

--------------------------------------------------
Note added at 4 hrs (2010-10-15 16:16:02 GMT)
--------------------------------------------------

ECOMIC CO., LTD offers payroll outsourcing services. The Company also develops and sells payroll calculation systems and provide salary consulting services.
http://www.bloomberg.com/apps/quote?ticker=3802:JP

--------------------------------------------------
Note added at 4 hrs (2010-10-15 16:17:59 GMT)
--------------------------------------------------

For example, work sheets define tasks for every employee and generate actual working hours, which are then sent to the production module. The other part goes to the payroll calculation system, where billable working hours are determined, and used for evaluating the profitability of every programme, news service, and book, as well as employee salaries.
http://www.microsoft.com/casestudies/Case_Study_Detail.aspx?...

--------------------------------------------------
Note added at 4 hrs (2010-10-15 16:22:24 GMT)
--------------------------------------------------

Payroll is an essential activity of every organization, irrespective of the fact of how big or small the company is. To ensure that an organization in Canada calculates the pay of its employees every month in appropriate manner, the company can hire a professional payroll interface in Canada. This will help eliminating any defects in the payroll calculation system followed and also help in cross-checking any miscalculations and deductions.
http://www.torontohotels.eu/a627863-find-your-payroll-interf...

--------------------------------------------------
Note added at 7 hrs (2010-10-15 18:29:58 GMT)
--------------------------------------------------

Да, Ольга.

--------------------------------------------------
Note added at 10 hrs (2010-10-15 21:32:32 GMT)
--------------------------------------------------

terms and conditions for bonus payments

--------------------------------------------------
Note added at 10 hrs (2010-10-15 21:34:08 GMT)
--------------------------------------------------

No, eligibility is too narrow. Условия may mean a lot more.