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The Hierarchy is the Branch × Sector × Position combination that defines an employee’s “position” in the company. It is not a manager↔report relationship: it is an organizational/positional structure, and it is precisely what determines the occupational risks and the required exams.
Where the person works (Branch) + the environment they work in (Sector) + what they do (Position) = the Hierarchy.

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How the hierarchy is created

You do not create the hierarchy directly through its own endpoint. It is resolved or created automatically when you register an Employee providing branch_id, sector_id and position_id. The platform ensures the (branch, sector, position) combination is unique per organization — if it already exists, the employee is linked to it; if not, it is created.
That’s why the onboarding prerequisite is having Branch, Sector and Position already registered in the organization. See the Set up the company structure flow.

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Why this matters in occupational health

Two employees can work in the same company and even the same branch, but if they are in different sectors and positions, they may have completely different exposure risks and required exams. The hierarchy makes that explicit and traceable.

Branch

Sector

Position