Agencies or employees who join Article II of SB 273, Laws of 1952, [now Article III beginning at Miss. Code Ann. § 25-11-101 et seq. (1972, as amended)] after February 1, 1953, but on or before July 1, 1953, will be required to remit prior to July 25, 1953, both the employer's and the employee's part of contributions for that period, or else they are not to receive credit for services rendered during that period.
27 Miss. Code. R. 210-18-101