I. "Employee" means any person employed to work in a place of employment. Volunteers or auxiliary members of a fire, police department, ambulance service or the state police, whether paid or not paid, shall be deemed to be in the employment of a political subdivision when performing official service or duty for a political subdivision.II. "Employer" means the state or any of its political subdivisions operating a place of employment.III. "Imminent danger" means a situation created by any conditions or practices in any place of employment which are such that a danger exists which could reasonably be expected to cause death or serious physical harm either immediately or before such danger could be eliminated through the procedures provided by this chapter.IV. "Place of employment" means all buildings, offices or other sites owned or leased by the state or by any political subdivision of the state. "Place of employment" includes all buildings, sheds, structures or places used in connection with employee activity at a place of employment.V. "Serious injury" means an incident that results in an amputation, loss or fracture of any body part, head injury, or internal injury that necessitates immediate hospitalization.