# THE POLICE PENSION (NORTHERN IRELAND) REGULATIONS 2009, Paragraph 10


(1) For regulation 22(2) (average pensionable pay) substitute—
“(2) Where a police officer (other than a part-time reserve officer) is entitled to reckon less than twelve months’ pensionable service, that aggregate shall be multiplied by the reciprocal of the fraction of the twelve-month period during which he was entitled to pensionable pay.”.
(2) After paragraph (5) insert—
“(6) Where any period of twelve months mentioned in regulation 21(1) includes a period of service as a part-time reserve officer, for the purposes of determining average pensionable pay, the officer’s pensionable pay, shall be increased by the following fraction:
1×(B×C)¯AWhere—
A is the number of hours worked as a part-time reserve officer in the twelve month period;
B is the number of hours per week if service was on a full-time basis for an officer who meets definition (a) or (b) of “police officer”; and
C is the number of weeks’ service in a full year for an officer who meets definition (a) or (b) of “police officer””.

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Source: https://www.legislation.gov.uk/nisr/2009/79/schedule/4A/paragraph/10 (the official version)
Page: https://openlegislation.uk/police-pension-northern-ireland-regulations-2009/schedule-4A/paragraph-10
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.