Which method would verify that a control measure is effective?

Which method would verify that a control measure is effective?

• A. Inspections of procedures and observation of work practices.
• B. Inspections, audits, performance metrics, and observation.
• C. Rely on worker testimonials.
• D. Wait for an incident to occur.

Answer: (B)

Verifying a control measure’s effectiveness relies on collecting evidence from multiple angles, not a single signal. Regular inspections of procedures and watching how work is performed show whether the control is actually being put into practice on the ground and if deviations are addressed. Audits provide an independent check that the control design and its implementation meet intended standards and policies. Performance metrics translate safety outcomes into numbers—injury or near-miss rates, time-to-compliance, leading indicators—so you can track trends and confirm the control’s impact over time. Direct observation confirms real-world behavior aligns with how the control is supposed to work and can uncover issues that paperwork or metrics miss. Together, these methods give robust evidence that the control is effective and help pinpoint where improvements are needed. Relying on worker testimonials is too subjective, and waiting for an incident to occur is reactive and does not demonstrate effectiveness in advance.

Verifying a control measure’s effectiveness relies on collecting evidence from multiple angles, not a single signal. Regular inspections of procedures and watching how work is performed show whether the control is actually being put into practice on the ground and if deviations are addressed. Audits provide an independent check that the control design and its implementation meet intended standards and policies. Performance metrics translate safety outcomes into numbers—injury or near-miss rates, time-to-compliance, leading indicators—so you can track trends and confirm the control’s impact over time. Direct observation confirms real-world behavior aligns with how the control is supposed to work and can uncover issues that paperwork or metrics miss. Together, these methods give robust evidence that the control is effective and help pinpoint where improvements are needed. Relying on worker testimonials is too subjective, and waiting for an incident to occur is reactive and does not demonstrate effectiveness in advance.