(1) “Employee” means a person permitted to work by an employer.

  (2) “Employer” means an individual or organization, including this state or a political subdivision, that employs 1 or more persons. Except as otherwise specifically provided in the franchise agreement, as between a franchisee and franchisor, the franchisee is considered the sole employer of workers for whom the franchisee provides a benefit plan or pays wages.

  (3) “Imminent danger” means a condition or practice in a place of employment such that a danger exists that could reasonably be expected to cause death or serious physical harm either immediately or before the imminence of the danger can be eliminated through the enforcement procedures otherwise provided. A container of an unknown and unlabeled chemical or a container of hazardous chemicals that is not labeled or for which a safety data sheet is not available as required by the standard incorporated by reference in section 14a shall be considered an imminent danger after meeting the provisions of section 31.

  (4) “Inspection” means the examination or survey of a place of employment to detect the presence of an existing or potential occupational safety or health hazard or to determine compliance with this act or with rules or standards promulgated or orders issued under this act.

  (5) “Investigation” means the detailed evaluation or study of working conditions, including equipment, processes, substances, air contaminants, or physical agents with respect to the actual or potential occurrence of occupational accidents, illnesses, or diseases.