820 ILCS 405/241

Prior to September 27, 1959, "week" means such period of seven consecutive days as the Director may by regulation prescribe. On and after September 27, 1959, "week" means

A. Calendar week, or

B. Any seven consecutive day period with respect to which no wages are payable to an individual and during which he performs no services, which occurs within two calendar weeks in each of which he is not unemployed; or

C. Any seven consecutive day period which ends after September 26, 1959, and before October 3, 1959.

The Director may by regulation prescribe that a week shall be deemed to be "in," "within," or "during" any benefit year which includes the greater part of such week.