Minn. Stat. § 175.27
Any employee of the Department of Labor and Industry who shall disclose the names of any persons supplying information at the request of such department shall be guilty of a misdemeanor. Any person who, having been duly subpoenaed, shall refuse to attend or testify in any hearing under the direction of the Department of Labor and Industry shall be guilty of a misdemeanor. Any owner or occupant of any place of employment who shall refuse to admit thereto any employee of the department seeking entrance in the discharge of the employee's duties, shall be guilty of a misdemeanor. Any person, firm, or corporation, or any of its officers or agents, who or which shall refuse to file with the department such reports as are required by it under the provisions of sections 175.24 to 175.27 shall be guilty of a misdemeanor.
Minn. Stat. § 175.27
(4253) 1913 c 518 s 14; 1917 c 14 s 1; Ex1967 c 1 s 6; 1975 c 348 s 5; 1986 c 444