| Code | Description | Example |
| Health care professionals | The professionals provide health care treatment and advice based on formal training. | Nursing staff, health care senior professionals, general surgery trainees and tactical medicine |
| Professionals of the educational sector | The professionals provide education including teaching, training, counslling, coaching based on formal training. | Athletic coaches, high school educators, school counselor site supervisors and life science trainers |
| Employees | The employees are persons who are paid to work for an organization or another person and whose profession is not mentionaed in the studies. | Employees of companies |
| Divers | This cluster includes these professionals that are not being included under the health care and educational sectors. | Conversational programmers, scientists and diplomats, county extension directors and miners |