NATURE OF WORK - CLASSIFICATION OF OCCUPATION
Class 1 : Professions and occupations involving non-manual, administrative or clerical work solely in offices or similar non-hazardous places.
Class 2 : Professions and occupations involving non-manual work with some exposure to risk from the environment or which entail much travel, or work with mainly
supervisory duties and occasional light manual work
Class 3 : Professions and occupations involving light manual work not of particularly hazardous nature but involving the use of tools or light machinery