1、Flex time　　 An arrangement where employees can choose which hours they work,  subject to company approval.
　　2、Overtime 　　 Any work done outside of normal working hours. Usually compensated at  1.5 times the regular salary (time and a half). Some companies pay at twice the regular salary (double time).
　　3、Shift work 　　 Staffing arrangement at companies that must operate around the clock.  Typically 2 (12-hour) or 3 (8-hour) daily shifts.
　　4、Piece work 　　 Work that is compensated for by each unit (piece) completed.
　　5、Salary / Wage　　 Salary is a fixed weekly/monthly income. Wage is an hourly income.

　　6、Paid vacation　　 A yearly allowance of getting paid for time off. Varies according to 　　 seniority and position.

　    7、Sick days　　 A benefit whereby employees get paid when they can’t work due to illness.
　　8、Personal days　　 Unpaid time off due to personal reasons.
　　9、Statutory holidays　　 Government-mandated legal days off.
　　10、Probation　　 Period of time for a company to evaluate employees before hiring them as
permanent staff.

　　11、Medical plan　　 A medical insurance policy paid by the company as an employee benefit.
Coverage varies between companies.
　　12、Pension plan/401K 　　 A fund built with regular contributions by employees and employer to give an employee a regular income (reduced, based on age and length of service) on retirement.

　    13、Insurance 　　 Any plan whereby employees are covered when they can’t work. It can be 　　 medical, dental, disability, life, etc. 
　　14、Leave of absence　　 Unpaid time off, on a long-term basis, requested by an employee and
approved by the company.
　　15、Maternity leave 　　 Unpaid time off before and after childbirth. Length of time varies. At some companies, the husband can get this also!

　　16、Day care 　　 A company service to help parents take care of young children while they　 work. May or may not be funded (partially or completely) by the company.