TOOLBOX TALK: Stop Work Authority
RATTLIR SAFETY SERIES - "STRIKE BEFORE IT BITES"
Purpose
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Stop Work Authority (SWA) empowers every worker to immediately stop a task when an unsafe condition, unsafe behavior, or uncertainty about the job is present. SWA prevents incidents before they occur and reinforces a culture where safety takes precedence over schedule, cost, or hierarchy.​​​​​​​​​​​​​​​​​​​​​​​
Figure 1 - Common triggers for Stop Work Authority activation.
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When to Use Stop Work Authority
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Stop Work must be initiated when any of the following occur:
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Unsafe conditions (weather, unstable ground, trip hazards, dropped-object risks).
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Unsafe actions or behaviors (bypassing procedures, improper PPE).
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Equipment malfunction or degradation.
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Lack of understanding of the task or unclear instructions.
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Change in scope, environment, or conditions.
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Worker fatigue or signs of impairment.
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Any situation where a worker feels unsafe or unprepared.
How to Initiate Stop Work
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Call for Stop Work clearly and immediately – anyone can do it.
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All personnel stop the task and place equipment in a safe position.
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Communicate the concern directly and respectfully.
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Address or correct the hazard – engineering, administrative, or PPE controls.
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Restart only when the entire team agrees it is safe and hazards are mitigated.
Responsibilities Under SWA​
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Workers: Empowered and obligated to stop unsafe work.
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Supervisors: Must support SWA decisions without retaliation.
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Management: Maintain a culture where SWA is encouraged and reinforced.
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Teams: Communicate openly when hazards or uncertainty arise.
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Protection from Retaliation
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No worker may be punished, criticized, or discouraged for stopping work. SWA failures often lead to incidents – SWA successes prevent them. RATTLIR maintains a zero-retaliation policy to ensure workers feel confident using their authority.
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Stop Work at RATTLIR
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As a small, agile company, RATTLIR leverages SWA to maintain exceptionally high safety standards. Our size allows rapid hazard identification, faster decision-making, and a culture where every worker’s voice matters. SWA supports our commitment to precision, discipline, and risk reduction.
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​​Discussion Questions
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When was the last time you encountered a situation that warranted Stop Work?
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Do you feel empowered to call Stop Work without hesitation?
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Are there any current tasks today that require clarification or reassessment?
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RATTLIR Takeaway
Stop Work Authority is our strongest tool for preventing incidents. By speaking up early and supporting a zero-retaliation culture, we ensure we strike before it bites – every time.