Routine Work: Make the Critical Step Stand Out

Human Performance weekly series: lesson 44 of 52.

A 5–10 minute crew discussion, plus time to verify the actual controls. The crew talk and Word version are public. Separate supervisor and attendance records are included with free Safety & Systems membership.

Why this matters

A familiar sequence can carry us past a changed step. Before work, make that decision clear in the approved instruction and setup. Place the cue where it is needed, connect it to the required check and keep required protection intact.

Learning objective

Identify where a familiar sequence changes and verify an approved cue or check at that point before relying on it.

Key hazards or failure points

Following yesterday’s sequence; a changed condition buried in instructions; several similar labels; a cue seen too late; unofficial markings; a reminder mistaken for a safeguard; repeated alerts losing meaning.

Practical controls

• Compare the familiar sequence with today’s approved task. Identify the precise point where the required action or prerequisite differs. Explain the difference; experience does not make it obvious.
• Use the responsible owner’s process to clarify that decision. The cue must match current instructions and remain readable without obscuring labels, indicators or required warnings.
• Link the cue to a specific check, responsible role and hold condition. Keep technical safeguards and required verification in place. Do not add an informal mark, change a control or rewrite a procedure in the field.

Verify It in the Field

• Use clearly marked paper examples of the familiar and changed tasks. Ask a worker to locate the difference and explain the required next step. Compare the answer with the governing instruction; do not rehearse by operating equipment.
• From authorized safe access, check whether the approved cue is available before the decision, matches the correct item and can be understood in actual conditions. Record the location, document revision and finding; an unreadable or outdated cue remains unresolved.
• Confirm the linked control check uses its actual acceptance source and authorized method. Record verifier, result and time before the affected step. Ask what happens if the expected condition is absent; noticing a cue alone does not verify protection or authorize action.

Stop and reassess

Hold for an unclear difference, conflicting cue, unknown prerequisite or lost step status. Use the task’s safe-state and notification process. Obtain an approved correction, required rechecks and a clear restart point. Never repeat an uncertain action simply because it is normally the next step.

Crew discussion questions

• Where does today’s task depart from the familiar sequence?
• Will the cue reach us before that decision?
• What condition must be verified before the next action?

For each required control, record its acceptance source and criterion, safe verification method, responsible checker, actual result and time. Use VERIFIED, HOLD/NOT VERIFIED, or N/A with a reason. A tick alone is not evidence. Complete all applicable task inspections; do not enter danger or improvise a test to fill out a form.

Leader preparation and practical detail

Put the information at the decision it supports

Illustrative situation: a task variation requires a review before continuing, but that requirement appears after the familiar sequence on a separate page. Record the usability problem and ask the document owner to correct it through the approved process. A non-operating walkthrough can show whether the revised instruction makes the decision clear in time. Do not solve the problem by casually inserting a new field instruction into a controlled procedure.

A cue supports attention; a safeguard controls exposure

An approved reminder may help someone notice a changed condition, but it does not replace the protection required for the task. If safe work depends entirely on catching one easily missed cue, use the error-tolerance and hierarchy resources to seek a stronger approved arrangement. Preserve all required safeguards while that review occurs. This lesson provides no generic permission to relabel controls, add warning devices or alter equipment.

Practice a changed sequence without testing memory or creating risk

Give participants the actual applicable instruction and a clearly marked training example. Ask them to explain the changed prerequisite and the response when it is absent. The purpose is to find an unclear cue or unusable instruction, not to catch someone making a mistake. The interruption lesson addresses protected attention, and the place-keeping lesson addresses uncertain completion; this lesson focuses on making a specific departure from routine apparent before action.

Short supervisor field check

• Specific change point is identified against current instructions.
• Cue is approved, accurate and available before the decision.
• Safe paper rehearsal demonstrates the intended meaning.
• Linked prerequisite has a governing criterion and actual check evidence.
• Mismatch, interruption and restart arrangements are understood.

Confirm the relevant trained/authorized people, unresolved items, interim protection, correction owner and recheck. Record required release authority and rebrief anyone affected. The separate sheet supports these records; it does not replace a specialist inspection, permit or engineering determination.

Attendance and follow-through

Use the separate attendance sheet for participants, roles, discussion concerns, actions and late-arrival rebriefs. Attendance is not proof of competence, functioning controls or authorization to work. Keep completed records private under employer procedures.

Source acknowledgment

This resource draws on the U.S. Department of Energy’s DOE-HDBK-1028-2009, Human Performance Improvement Handbook, Volume 1 (June 2009). Todd Jerome Jenkins makes no claim of authorship or copyright ownership in the original U.S. Government work. New explanations, examples, exercises and layouts are Todd Jerome Jenkins adaptations. No endorsement by DOE or the U.S. Government is implied. Third-party material credited in the handbook remains attributed to its source; this notice does not claim rights in that material.

Source excerpt: Volume 1/VOLUME 1 CHAPTER 2-REDUCING ERROR.pdf; Chapter 2, printed pp. 2-21 through 2-23 (PDF pages 21–23). The June 2009 handbook supplies concepts; this lesson uses original explanations and exercises.

Technical scope and references

References reviewed October 9, 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 1 — Skill-Based Performance — June 2009, Chapter 2 printed pages 2-21–2-23: familiar sequences, slips, omissions and changed task requirements. Adjacent pages 2-20 and 2-24 inspected for context. All historical probabilities, activity percentages, third-party diagrams and hazardous equipment examples excluded.
2. HSE — Managing Human Failures — UK regulator guidance: slips/lapses can occur in familiar work; task/equipment design and work conditions matter. Used as guidance, not a U.S. requirement.

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. No task-specific worked example is linked for this topic yet. 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 crew discussions

• Self-Checking: Confirm the Item, Action and Result
• Place-Keeping: Know Where to Resume

Continue the weekly series

• Lesson 43: Build the Job to Tolerate a Mistake
• Lesson 45: The Right Rule: Check the Conditions Before Choosing a Branch

Put one check into practice

Use the free JHA/JSA planning and field-verification worksheet to record today’s change, the required protection and the evidence needed before exposure.