Regulation 120 of the Principal Regulations is amended as follows:(a) by omitting paragraph (d) from subregulation (4) and substituting the following paragraph:(d) has, while being continuously employed, made contributions to the contributory scheme for a total period of 10 years, in which case he or she is taken to be a full benefits contributor.(b) by inserting the following subregulation after subregulation (4) :(5) For the purpose of subregulation (4)(d) , the total period of 10 years is not taken to include (a) any periods purchased under regulation 31 ; or(b) any service while on sick leave without pay after the commencement day.