"Week" means any period of seven consecutive calendar days ending at midnight as the commissioner may by regulation prescribe.
[ 1945 c 35 § 37; Rem. Supp. 1945 § 9998-175. Prior: 1943 c 127 § 13; 1941 c 253 § 14; 1939 c 214 § 16; 1937 c 162 § 19.]