STAR Self-Checking: Stop, Think, Act, Review

HOP skills practice • Batch 1, topic 1 of 5. 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?

STAR is a self-check before and after a consequential action: Stop, Think, Act, Review. Use the current instruction to identify the right item, the intended action and the expected result.

Why use it?

Familiar work makes it easy to select the wrong item or miss an unexpected result. STAR creates a deliberate check; it cannot repair a missing safeguard or an unusable instruction.

When should we use it?

Before an important action, especially after an interruption or when items look alike. If action status is uncertain, establish it through the work process before proceeding.

Where does it apply?

At the point of action: a desk, dispatch station, workshop or field location. Work from a safe position with the relevant instruction available.

Learning objective

Demonstrate all four STAR steps and hold an action when identity, instructions or results are uncertain.

Key hazards or failure points

Look-alike items; distractions; memory replacing instructions; skipping Review; confidence mistaken for evidence.

How to use it — practical controls

• STOP before the action. Reduce distractions. THINK: confirm the item, instruction, required protection and expected result.
• ACT only when authorized and prerequisites are verified. Follow the task procedure; STAR does not replace required checks.
• REVIEW the actual result against the specified expectation using the approved safe method. Report a mismatch; do not experiment.

Verify It in the Field

• Locate the real task's criterion, safe checking method and authorized checker. Record the observed result and time; matching a label alone does not prove protection works.
• Practice on paper: instruction says file B24; cards show B24 and B42. Explain STAR, select B24 and compare the selection with the instruction.
• Repeat with an unreadable identifier. Success means holding the action and seeking clarification. No live equipment or records are changed.

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 for unclear identity, missing protection, lost step status or an unexpected result. Use the task's safe response and obtain the required resolution before restart.

Toolbox talk questions

• Where is our expected result defined?
• What could distract us at the action point?
• What evidence distinguishes a completed action from a successful result?

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.

Office or administrative work

Before releasing a revised work instruction, compare the file identifier, revision and intended recipients with the approved release record. Review the resulting release record. STAR does not grant document approval authority.

Warehouse or distribution

Before selecting a carton, compare the order and actual stock identifiers through the approved process. Review the recorded selection. Similar packaging is a reason to check identity, not a basis for accepting the item.

Facilities or field work

Before an authorized equipment step, compare the work instruction and approved identifier from a safe position. Check prerequisites and the specified result through the task's procedure. Do not touch equipment or cross a boundary to demonstrate STAR.

Leader follow-through — improve the conditions

If look-alike names or interruptions repeatedly defeat the check, improve labeling, layout, work timing or the release process. Ask workers to test the proposed improvement safely. Do not answer a design problem only by asking people to concentrate harder.

Short supervisor field check

• Participant demonstrates Stop, Think, Act and Review using the paper task.
• Actual item, current instruction and authorization are established.
• Required protection has its own source, criterion and safe verification method.
• Expected and actual results are compared by the authorized person.
• Interruption or mismatch leads to a safe hold; recurring distractions are addressed.

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 SELF-CHECKING.pdf; printed pages 18–19. The source PDF also contains Procedure Use and Adherence, printed pages 20–21; these were inspected but are excluded from this lesson's concept basis. The source instruction to touch a component label is not adopted.

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 — Self-Checking — June 2009 guidance, printed pages 18–19: attention before an action, comparison with guidance and checking the outcome. The source’s touch-the-label instruction is not adopted. Embedded Procedure Use pages 20–21 are excluded.
2. NIOSH — Hierarchy of Controls — April 10, 2024 guidance: prefer effective controls less dependent on sustained human action; attention does not replace safeguards.

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

• Pre Job Jha Jsa
• Human Performance Pre Job Check

Practice another HOP skill

• Peer Checking: Agree Before the Action
• Three-Way Communication: Close the Loop
• Pause When Unsure: Resolve Before Restart
• Validate Assumptions: Find the Evidence

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.