http://www.legislation.gov.uk/nisr/1998/250/signature/madeThe Social Security (Categorisation of Earners) (Amendment) Regulations (Northern Ireland) 1998PayGovernment Printer for Northern Ireland2016-09-06SOCIAL SECURITYThese Regulations further amend the Social Security (Categorisation of Earners) Regulations (Northern Ireland) 1978 (“the principal Regulations”).The Social Security (Categorisation of Earners) (Amendment) Regulations (Northern Ireland) 1998RegulationsThe Social Security (Categorisation of Earners) (Amendment) Regulations 2014Sch.reg. 1Sealed with the Official Seal of the Department of Health and Social Services for Northern Ireland onJohn O'NeillAssistant Secretary16th July 1998.