During a JSA, which practice best ensures hazards are properly controlled?

• A. Skip verification and rely on memory.
• B. Verify by a briefing and peer sign-off.
• C. Verify by observation and follow-up to ensure controls were implemented.
• D. Verify only by the supervisor's sign-off.

Answer: (C)

Verifying hazard controls on the job site through direct observation and follow-up ensures the controls are actually in place and effective. This approach provides real-time confirmation that the planned safety measures are implemented and being used, and it includes checking that any required safeguards remain in place after work starts. Relying on memory or skipping verification invites gaps, since plans can change or details can be overlooked. Briefings and peer sign-offs improve communication and accountability, but they don’t guarantee that the controls were completed and sustained on the ground. Relying only on supervisor sign-off can miss whether workers are actually applying the controls during execution. Observing and then following up tightens control by closing the loop between planning and on-the-job application.