An economics and business concept defining a measure, method, or organizational practice used for analysis and decision-making. It specifies how information is generated or used to guide allocation of resources and evaluation of outcomes. It does not ensure correctness without clear assumptions, reliable inputs, and appropriate review of results. It materially affects planning, performance, and risk by shaping decisions and incentives within organizations and markets. The concept is generally stable, though methods and tools evolve over time.

Principle

Mitigate risk by separating initiation, authorization, recording and custody duties across different roles; require complementary controls where separation is impractical.

Demonstration

Example: In payroll, one person prepares payroll data, a different manager approves payroll payments, and the treasury function executes bank transfers; reconciliations are performed by someone independent from payroll processing.

Misapplication

Rigidly applying segregation in a small organization without compensating controls, causing process bottlenecks; or implementing separation on paper while allowing shared credentials or unchecked overrides.

Consequence

Appropriate segregation reduces opportunity for misappropriation, increases likelihood of detection, clarifies accountability and strengthens audit trails.

Reversal

Consolidating conflicting duties into a single role (for example the same person initiating, approving and recording payments) increases the chance a single actor can commit and hide wrongdoing.

Boundary

Applies primarily to transactional and financial reporting processes; it does not imply every minor task must be separate and can be supplemented by compensating controls such as supervisory review, system logs or dual approvals.

Semantic Tension

Tension exists between segregation for control and staffing or efficiency constraints; overlaps with concepts like dual control, four-eyes principle and system-based access controls.

Synthesis

Segregation of duties is the purposeful distribution of incompatible responsibilities across people and systems, balanced with compensating measures when strict separation cannot be achieved, to reduce risk and preserve reliable records.