Introductory Text1.Citation and commencement2.The Social Security (Categorisation of Earners) Regulations 1978 are amended.3.In regulation 1(2) (interpretation) insert at the appropriate places— “category.4.(1) Renumber regulation 5 as paragraph (1) of that regulation.5.In paragraph 9 of Schedule 3 (personal service of person.SignatureExplanatory Note