Toolbox Talk - Questioning the Work Plan

HOP skills practice • Batch 5, topic 30 of 52. A 5–10 minute toolbox talk plus time for actual field verification. One-page PDF and editable Word talk; separate supervisor and attendance forms.

What is this skill?

Questioning a work plan means testing its important assumptions before people depend on them.

Why use it?

A previously successful plan may no longer match the equipment, people or conditions.

When should we use it?

Before approving or reusing a plan, especially after a change or conflicting information.

Where does it apply?

During planning, review and safe walkthroughs with the people affected.

Learning objective

Identify one assumption and define evidence needed to accept or revise it.

Key hazards or failure points

Copying old plans; dismissing contrary evidence; vague success criteria; hidden downstream effects.

How to use it — practical controls

• Identify the intended result, critical steps and assumptions supporting the plan.
• Ask what could make an assumption wrong. Compare current evidence with the applicable requirements.
• Resolve conflicts with the responsible specialist and update the plan before release.

Verify It in the Field

• Trace one planned control to the current governing source and the evidence needed before exposure.
• Paper practice: an old plan assumes an access route remains open. A new layout shows an obstruction.
• Identify affected steps and the required review. Success means holding the unsupported part of the plan.

For real work, record the control, governing source and criterion, safe method, authorized checker, actual result and time. Mark VERIFIED, HOLD/NOT VERIFIED, or N/A with a reason. A practiced skill or matching label does not demonstrate that a physical safeguard functions. Do not create exposure to complete a check.

Stop and reassess

Hold affected work for conflicting instructions, unverified critical assumptions or changed conditions without review.

Toolbox talk questions

• What are we assuming is unchanged?
• What evidence could contradict us?
• Who else will be affected?

Examples across different work settings

These are original teaching examples, not operating instructions. Use paper, photographs or inert training items for practice. Change the setting to fit your team while retaining the skill steps and the applicable task requirements.

Venue setup

A previous floor plan is reused after storage has moved. The team checks routes and interfaces before assigning the setup sequence.

Laboratory planning

A worksheet assumes a familiar container type. The planner verifies the actual item and obtains required technical review when it differs.

Field installation

An access point used on the last visit is now unavailable. The team revises the method through the planning process instead of inventing an on-site substitute.

Practice the skill and understand its limits

Write one assumption as a testable statement. Add its source, how it can be checked safely and who decides if the result differs. The source labels its approach FACTS; this original exercise uses plain questions and does not prescribe a universal acronym sequence.

Leader follow-through — improve the conditions

Make it easy to flag assumptions in plans. Give reviewers access to field information and time to resolve contradictory evidence.

Short supervisor field check

• Critical assumptions are explicit.
• Current sources and field conditions are compared.
• Contrary evidence is considered.
• Control verification is specified before exposure.
• Revisions receive required review and communication.

Use the separate supervisor sheet to retain evidence, open items, correction owner, recheck result and required restart authority. Keep task-specific permits, inspections and technical decisions in their established process.

Attendance and follow-through

Use the separate attendance sheet for participants, roles, questions, actions and rebriefs. Attendance does not establish competence, verify a control or authorize work. Keep completed records private under employer procedures.

Source acknowledgment

Based on DOE-HDBK-1028-2009, Vol. 2 (June 2009). No claim to authorship or copyright ownership of original U.S. Government work. Todd Jerome Jenkins adaptation; no government endorsement implied. Explanations, examples, practice exercises and layouts are original adaptations. Third-party material credited in the handbook retains its original attribution; this notice does not claim rights in that material.

Source file inspected: Volume 2/VOLUME 2 QUESTIONING ATTITUDE – WORK PLANNING AND PREPARATION.pdf; printed pages 13–15. Source concepts paraphrased; historical mandates, guarantees and third-party wording are not reproduced.

Technical scope and references

References reviewed October 13, 2026. DOE human-performance tools and OSHA recommended practices support preparation and discussion; they do not establish universal technical acceptance criteria. Apply the current task procedure, manufacturer instructions, permit and required competent or qualified decisions. A successful exercise does not replace required training, technical verification or work authorization.

1. DOE-HDBK-1028-2009, Volume 2 — Questioning during planning — June 2009 illustrative guidance; Printed pp. 13, 14, 15. Original ZIP excerpt inspected in full; no claim of universal mandated process.
2. OSHA — Hazard Prevention and Control — Recommended practices, action items 3 and 6: implementation responsibility and effectiveness checks; not technical acceptance criteria.

The DOE handbook is June 2009 illustrative guidance, not a current requirements document. Availability of the official edition and the linked supporting guidance was checked October 13, 2026. Apply current task-specific requirements, manufacturer instructions, permits and required competent or qualified decisions; this talk supplies no universal technical acceptance criteria.

Connect this discussion to your JHA/JSA

Use the JHA/JSA planning and field-verification worksheet to record the actual task steps, hazards, responsible roles and controls. Return to What Changed Today? when the plan or conditions change.

Related Todd Jerome Jenkins articles: How to Conduct a Job Safety Analysis and What Is Human and Organizational Performance?.

Related toolbox talks

• Questioning in the Field: Notice the Mismatch
• Assumptions: Show What Is Known and What Is Not

Practice another HOP skill

• Toolbox Talk - Using Safety Indicators to Learn
• Toolbox Talk - Learning from Incident Context
• Toolbox Talk - Briefing a Technical Task
• Toolbox Talk - Planning Resources for Safe Work

One next step

Use the free JHA/JSA planning and field-verification worksheet linked above to apply this skill to one actual task step. Record what must be checked before exposure and who will check it.