(2) Cause shall be deemed to exist if reasonable legislative or administrative standards for conducting a routine, periodic or area inspection are satisfied with respect to the particular place of employment, or there is probable cause to believe that a condition of nonconformity with a safety or health statute, ordinance, regulation, rule, standard or order exists with respect to the particular place of employment, or an investigation is reasonably believed to be necessary in order to determine or verify the cause of an employee’s death, injury or illness. [1971 c.405 §2; 1973 c.833 §26]