Culminating years of activity in its state legislature, Wisconsin on January twenty-eighth adopted the Groves Bill (Bill No. 8, A) providing for compulsory unemployment insurance, the first legislation of the sort to be enacted in the United States. For a discussion of unemployment insurance measures introduced at the 1931 legislatures see 30 MICH. L. REV. 410 (January, 1932). The compulsory plan is to become operative July 1, 1933, unless Wisconsin employers employing more than 175,000 workers in the state have by that date established approved voluntary insurance systems.