Part 1 Citation, commencement and interpretation 1Citation, commencement ... and interpretation 2Enrolment information 3Jobholder information 4Pay reference periods for the purposes of sections 1(1)(c), 3(1)(c) and 5(1)(c) of the Act 5Pay reference periods for the purposes of section 20(1)(b) and (c) and section 26(4)(b) and (5)(b) of the Act Part 1