There shall be established a bureau of immigration, labor and statistics, which shall be under the charge of a commissioner of immigration, labor and statistics, who shall be appointed by the governor, by and with the consent of the senate. The commissioner shall hold his office for two years, and until his successor shall have been appointed and qualified, unless sooner removed. The commissioner shall collect information upon the subject of labor, its relation to capital, the hours of labor and the earnings of laboring men and women, and the means of promoting their material, social, intellectual and moral prosperity. The commissioner shall annually make a report in writing to the governor of the state of the information collected and collated by him, and containing such recommendations as he may deem calculated to promote the efficiency of the bureau.