The meaning refers to the type of work that is prone to casualties and has great harm to the health or safety of operators, others and surrounding facilities. The former Ministry of Labor designated underground, high altitude, high temperature, heavy physical labor and toxic and harmful operations as special operations, and made it clear that the scope of special operations was determined by the competent departments of various industries or labor departments.
Special type of work is not a formal concept, but a conventional name. Therefore, there is no formal definition of it in standards or regulations.