SCHEDULE AGREEMENT ON SOCIAL SECURITY BETWEEN THE SECRETARY OF STATE FOR SOCIAL SECURITY, THE DEPARTMENT OF HEALTH AND SOCIAL SERVICES FOR NORTHERN IRELAND AND THE LIEUTENANT-GOVERNOR OF THE ISLE OF MAN, WITH THE ADVICE AND CONSENT OF THE ISLE OF MAN DEPARTMENT OF HEALTH AND SOCIAL SECURITY, OF THE FIRST PART, THE SOCIAL SECURITY COMMITTEE, WITH THE CONSENT OF THE STATES OF JERSEY, OF THE SECOND PART, AND THE GUERNSEY SOCIAL SECURITY AUTHORITY, WITH THE CONSENT OF THE STATES OF GUERNSEY, OF THE THIRD PART

PART IV BENEFIT PROVISIONS

Section 2 Retirement Pension and Widow’s Benefit

Article 20 Overlapping Periods

For the purpose of applying Article 18:

(a) where a compulsory insurance period completed under the legislation of one Party coincides with a voluntary insurance period completed under the legislation of any other Party, only the compulsory insurance period shall be taken into account, provided that the amount of pension payable under the legislation of any other Party under paragraph (2) of Article 18 shall be increased by the amount by which the pension payable under the legislation of that Party would have been increased if all voluntary contributions paid under that legislation had been taken into account;

(b) where a contribution period completed under the legislation of one Party coincides with an equivalent period completed under the legislation of any other Party, only the contribution period shall be taken into account;

(c) where an equivalent period completed under the legislation of one Party coincides with an equivalent period completed under the legislation of any other Party, account shall be taken only of the equivalent period completed under the legislation under which the insured person was last insured before the day when the periods in question began or, if he was never insured before that day, under the legislation under which he first became insured after the day when the periods in question ended;

(d) where a compulsory contribution period completed under the legislation of one Party coincides with a compulsory contribution period completed under the legislation of any other Party, each Party shall take into account only the compulsory contribution period completed under its own legislation;

(e) where a voluntary contribution period completed under the legislation of one Party coincides with a voluntary contribution period completed under the legislation of any other Party, each Party shall take into account only the voluntary contribution period completed under its own legislation;

(f) where it is not possible to determine accurately the period of time in which certain insurance periods were completed under the legislation of one Party, such insurance periods shall be treated as if they did not overlap with insurance periods completed under the legislation of any other Party and shall be taken into account to the best advantage of the beneficiary.