SEF Reference Guide G15 | Manufacturing OpEx Maturity Assessment
How to use this guide. This is SEF's standard method and the numbers we start from. Every operation is different, so treat the targets, timings, weightings, and templates here as a starting point and adjust them to your products, customers, and risk. Write your version down before you measure against it. Do not apply a tool just to apply a tool. Every method here carries a cost in time, attention, and discipline, and the benefit has to justify that cost in your operation. If it does not, leave it out and say why. A lower score on a criterion you have deliberately chosen not to pursue is an honest score, not a failure. One thing should not change: the maturity level definitions, because they are the scoring basis for the assessment.
What it is
A safety management system is the set of routines a plant uses to find hazards, control them, learn from what goes wrong, and check that the controls work. The goal is to prevent injuries, not to react after someone gets hurt.
The heart of it is learning from near misses. For every injury there are many events where nobody was hurt but someone could have been: a pallet that fell into an empty aisle, a forklift that stopped just in time, a guard found open. Each one is a free lesson. A plant that reports, analyzes, and fixes near misses removes the causes of tomorrow’s injuries while they are still cheap to fix.
This guide uses US OSHA rules for recordable injuries as the reference. Plants outside the US should apply their own regulator’s criteria; the method is the same.
Why it matters
- People: the first reason is that nobody should be hurt at work. Everything else follows from that.
- Cost: injuries bring medical costs, higher insurance premiums, lost time, overtime, and possible fines.
- Delivery and quality: an injury stops the line, removes a skilled person, and often exposes the same process weakness that causes defects.
- Engagement: people can tell whether leadership means it. A plant that acts on near-miss reports earns trust that carries into every other improvement effort.
Key terms
| Term | Meaning |
|---|---|
| Accident | An unsafe event that causes an injury. |
| Incident (near miss) | An unsafe event that did not cause an injury but could have. Near misses are the early warning system for future accidents. |
| PPE | Personal Protective Equipment. Safety glasses, gloves, hearing protection, footwear, and other gear that protects the wearer from workplace hazards. |
| Recordable incident | A work-related injury or illness that meets the regulator’s recording criteria (in the US, OSHA recordkeeping rules), such as one needing medical treatment beyond first aid or causing lost time. |
| OSHA recording criteria | Under 29 CFR 1904.7, a work-related case is recordable if it results in death, days away from work, restricted work or job transfer, medical treatment beyond first aid, loss of consciousness, or a significant injury or illness diagnosed by a physician or other licensed health care professional. |
| First aid (OSHA) | A closed list in 29 CFR 1904.7, including non-prescription medication at non-prescription strength, cleaning and covering surface wounds, hot or cold therapy, non-rigid supports, removing splinters or eye particles by simple means, and drinking fluids for heat stress. Anything beyond the list is medical treatment. |
| TRIR | Total Recordable Incident Rate = number of recordable cases x 200,000 / total hours worked. The 200,000 is 100 full-time workers for a year (40 hours x 50 weeks). |
| DART rate | Days Away, Restricted, or Transferred rate. Same formula, counting only cases with days away, restriction, or transfer. |
| Hierarchy of controls | The order of preference for controlling a hazard (NIOSH): elimination, substitution, engineering controls, administrative controls, then PPE as the last line. |
| Leading indicator | A measure of activity that prevents harm (near misses reported, actions closed, safety walks done). |
| Lagging indicator | A measure of harm already done (recordables, lost-time cases). |
How to do it
- Get the basics in place. Do a hazard assessment for each area and job. Specify the PPE required, issue it, and post the requirement at the entrance to each area. Write short site safety rules and brief every visitor and contractor before they enter the floor.
- Set up a simple reporting channel. Make it easy to report a near miss or hazard in under two minutes: a card at each area, a QR code form, or a board at the daily meeting. Accept anonymous reports. Thank people for every report.
- Record, display, and escalate every accident. Log each injury the same day. Post a safety status (for example, a green cross calendar or days-since board) at the daily meeting. Define escalation: who is told within 1 hour, within 24 hours, and what triggers a formal investigation. Know the regulatory clock. In the US, a fatality must be reported to OSHA within 8 hours, and an in-patient hospitalization, amputation, or loss of an eye within 24 hours.
- Record recordables correctly. In the US, enter each recordable case on the OSHA 300 Log and 301 Incident Report within 7 calendar days of learning about it. Post the 300A annual summary from February 1 to April 30 each year, certified by a company executive.
- Analyze near misses, not just injuries. Review every near miss at the daily meeting. Rank them by potential severity. For any event with serious injury potential, run a structured root cause analysis (5 Whys or cause mapping, see G05) within a set time, even though nobody was hurt.
- Fix with the hierarchy of controls. For each root cause, look for the strongest practical control first: remove the hazard, substitute a safer method, add a guard or interlock, then procedures and training, and only then PPE. Assign an owner and a due date.
- Close the loop. Track every action to closure. Tell the person who reported the near miss what was done. Share the lesson with other areas that have the same hazard.
- Audit and walk. Leaders do scheduled safety walks, talking to operators about hazards and checking that past actions still work.
- Measure both kinds of indicators. Track TRIR and DART, but also near misses reported, share closed on time, and safety walks completed. A rising near-miss count in a new program is usually good news: it means people trust the system.
What each maturity level looks like
PE-1 Safety
| Level | Assessment wording | What it looks like on the floor | How to move up |
|---|---|---|---|
| 1 | Safety rules are created in reaction to incidents. | New rules appear after someone is hurt. PPE use depends on the person. Visitors walk the floor in street shoes. No one can say how many injuries happened last year. | Do a hazard assessment by area, set PPE requirements, and write basic site rules for employees and visitors. |
| 2 | Personal protective equipment (PPE) is issued and used as standard. Safety rules are issued to visitors and enforced. | PPE requirements are posted at each area and followed. Visitors get a safety briefing and PPE at reception, and someone stops them if they break the rules. | Start an accident log. Post safety status at the daily meeting. Write the escalation rules. |
| 3 | As Level 2, plus accidents are recorded, displayed, and escalated. | Every injury is logged the same day and shown on the board. Leaders are notified within set times. Recordables are on the OSHA 300 Log (or local equivalent) and investigated. | Launch near-miss reporting. Review near misses daily and run root cause on those with serious potential. |
| 4 | As Level 3, plus near-miss incidents are analyzed and mitigations put in place to prevent recurrence. | Near-miss cards are easy to find and used. Reports are discussed at the daily meeting. Actions use the hierarchy of controls and are tracked to closure. People can point to changes made from their reports. | Keep the near-miss system strong and aim the actions at the causes of recordables. Track leading indicators monthly. |
| 5 | As Level 4, plus no recordable incidents in the last 12 months. | The plant has gone a full 12 months with zero recordables, while near-miss reporting stays high and injury reporting is open and trusted. | Sustain: keep reporting rates up, audit the controls, and share methods with other sites. Watch for under-reporting. |
Evidence to look for
Document
- Hazard assessments and PPE requirements by area or job.
- Site safety rules and visitor or contractor briefing records.
- Accident log and, in the US, the OSHA 300 Log, 301 forms, and posted 300A summary.
- Near-miss reports with analysis, actions, owners, and closure dates.
- Investigation reports for serious incidents and near misses with serious potential.
- Safety walk or audit records.
Observation
- Is required PPE posted at area entrances and actually worn, by employees and visitors?
- Is there a safety status display at the daily meeting board? Is it current?
- Are near-miss cards or a reporting method visible and easy to reach?
- Are machine guards in place and interlocks working? Are walkways clear? Were you, as a visitor, briefed and given PPE?
Statement (questions to ask and who to ask)
- Operator: “If you saw something that nearly hurt someone, what would you do? What happened the last time you reported something?”
- Supervisor: “What were the last three near misses in your area, and what changed?”
- Safety lead or HR: “How do you decide whether an injury is recordable? Who makes the call?”
- Plant manager: “What are your leading safety indicators, and how often do you review them?”
Management report
- TRIR and DART trend (12 to 36 months) and days since last recordable.
- Near misses reported per month and per 100 employees.
- Share of safety actions closed on time.
- Safety walks completed versus plan.
Common pitfalls
- Chasing the zero, hiding the truth. Rewarding “zero injuries” can push people to stop reporting. OSHA’s recordkeeping rule (29 CFR 1904.35) requires a reporting procedure that does not discourage reporting and prohibits retaliation against employees who report. Reward reporting and fixing, not the absence of reports.
- PPE as the first answer. PPE is the last line of defense. If most actions say “wear gloves” or “retrain,” the hierarchy of controls is not being used.
- Near-miss reports that disappear. If people report and never hear back, reporting dies within weeks. Close the loop every time.
- Blaming the person. “Operator not careful” is not a root cause. Ask why the job made the mistake possible.
- Treating all near misses the same. A near miss with fatality potential needs more than a sticker. Rank by potential severity; the causes of serious injuries often differ from those of minor ones.
- Misclassifying cases. Calling medical treatment “first aid” to avoid a recordable is both a compliance risk and a lost chance to learn. Use the regulator’s list exactly.
Template
Near-miss and hazard report card
| Field | Entry |
|---|---|
| Date and time | |
| Area / machine | |
| What happened or what did you see? | |
| What could have happened? (worst credible outcome) | |
| Potential severity (Low / Medium / Serious or fatal) | |
| Immediate action taken | |
| Reported by (optional) | |
| Reviewed at daily meeting (date) | |
| Root cause (for Serious potential: 5 Whys or cause map attached) | |
| Control chosen (Eliminate / Substitute / Engineer / Admin / PPE) | |
| Action owner and due date | |
| Closed (date) and reporter informed (Y/N) |
Monthly safety scorecard
| Measure | Formula | This month | Last 12 months | Target |
|---|---|---|---|---|
| Recordable cases | Count | 0 | ||
| TRIR | Recordables x 200,000 / hours worked | |||
| DART rate | DART cases x 200,000 / hours worked | |||
| Near misses reported | Count | |||
| Near misses per 100 employees | Count / headcount x 100 | |||
| Actions closed on time | Closed on time / due x 100% | |||
| Safety walks completed | Done / planned x 100% |
First 30 days
- Week 1: Walk every area with a supervisor and an operator. List hazards and PPE needs. Check the visitor briefing. Confirm who owns the injury log and the OSHA 300 Log (or local equivalent).
- Week 2: Post PPE requirements at each area. Launch the near-miss card and a collection point at each daily meeting board. Brief supervisors on how to respond to a report.
- Week 3: Review near misses daily. Pick the two with the highest potential severity and run a root cause analysis. Apply at least one engineering control.
- Week 4: Publish the first monthly safety scorecard with both leading and lagging measures. Tell the reporters what was fixed. Schedule leadership safety walks for the next quarter.
Further reading
- OSHA, 29 CFR 1904, Recording and Reporting Occupational Injuries and Illnesses (general recording criteria in 1904.7): https://www.osha.gov/laws-regs/regulations/standardnumber/1904/1904.7
- OSHA, Recordkeeping forms and guidance (300, 300A, 301): https://www.osha.gov/recordkeeping
- OSHA, Recommended Practices for Safety and Health Programs (2016): https://www.osha.gov/safety-management
- NIOSH, Hierarchy of Controls: https://www.cdc.gov/niosh/hierarchy-of-controls/about/index.html
- ISO 45001:2018, Occupational health and safety management systems: https://www.iso.org/standard/63787.html
Want this for your business?
This is a live example of what Systems Equal Freedom builds for owner-run businesses: operations that are documented, visible, and able to run without the owner in every loop.
