The National Minimum Wage was first introduced on 1 April 1999.

The current main rate is £5.80 due to rise to £5.93 from 1 October 2010.

The rate for employees between the ages of 18 and 21 years old is £4.83, rising to £4.92 from 1 October 2010. 16 to 17 year olds must be paid a development rate of £3.57 rising to £3.64 from 1 October 2010.

The main rate will apply to 21 year olds from 1 October 2010.

For more detailed information on the National Minimum Wage, please visit the HM Revenue & Customs website