The commissioner, in addition to powers and duties specifically conferred and imposed upon him, shall have the following general powers and duties, to:
a. Maintain suitable headquarters for the department and such other quarters within the State as he may deem necessary to the department's proper functioning;
b. Have general responsibility for all of the department's operations under this act;
c. Supervise the organization of the department and changes in the organization thereof except that the divisions and bureaus of the department herein specifically provided shall be maintained; formulate and adopt rules and regulations for the efficient conduct of the work and general administration of the department, its officers and employees;
d. Make an annual report to the Governor and to the Legislature of the department's operations, and render such other reports as the Governor shall from time to time request.