Establishments are required by regulations to reassess their HACCP plans

• A. At least monthly
• B. Upon initial implementation and whenever changes are made
• C. Only when a deviation from a critical limit occurs
• D. At least once per calendar year

Answer: (D)

Regular reassessment of a HACCP plan is about keeping the plan aligned with how the facility operates over time. Regulations require this review at least once per calendar year, to confirm that the hazard analysis, identified critical control points, critical limits, monitoring, corrective actions, verification activities, and recordkeeping still reflect current processes and products. This annual check acts as a baseline to ensure the plan remains effective even as conditions change.

You should also update or revalidate the HACCP plan whenever changes occur that could affect hazards or control measures, but the minimum regulatory requirement is the yearly reassessment. Reassessing only when deviations occur isn’t sufficient because preventive verification should occur regardless of whether things have gone wrong. Reassessing monthly is more frequent than required unless a specific regulation or a change in operations dictates it. Reassessing only at the start when the plan is first implemented misses the ongoing need to stay current, so it wouldn’t meet the regulatory standard over time.

So, the best answer reflects the yearly timing: reassess at least once per calendar year.