(2) Where a participant returns t
o duty after having been absent from duty with leave and has not paid the contributions required to be paid by him in respect of the period, or any part thereof, during which he was so
absent, the appropriate amount of contributions shall be recovered by monthly deductions from his pay account during a period of not more than six months in amounts not less than amounts that were required to be paid by him while he was so
absent, except that, in exceptional circumstances, the Minister, in his discretion, may extend the period during which the c
...[+++]ontributions shall be recovered.