13.—Section 46 (4) (as amended by section 17 of the Act of 1995) of the Principal Act is hereby amended by the substitution for paragraph (a) of the following paragraph:
“(a) he shall requalify therefor when he has qualifying contributions (other than optional contributions) in respect of 13 contribution weeks begun or ended since the 156th day for which he was entitled to that benefit, and”.
