The National Minimum Wage Regulations 1999
These Regulations come into force on 1st April 1999. They set the hourly rate of the national minimum wage at £3.60; prescribe the working hours in respect of which workers must be paid at least the national minimum wage; provide for what payments by employers to workers are to be taken into account in determining whether the national minimum wage has been paid for those hours; and require employers to keep records sufficient to establish that they are paying their workers at least the rate of the national minimum wage and any applicable agricultural minimum rate.