If you ask most small manufacturers what safety metrics they track, the answer is some version of the same two numbers: total recordable incident rate (TRIR) and workers' compensation costs.
Both are important. Both are also lagging indicators, meaning they only tell you what has already gone wrong. They are the equivalent of checking your bank balance after you've already overspent. Useful for understanding the damage, but not for preventing it.
OSHA defines leading indicators as proactive, preventive measures that provide information about the effective performance of safety and health activities. They measure the events and conditions that lead up to injuries and illnesses, and they reveal potential problems before those problems become incidents. A good safety and health program, according to OSHA, uses leading indicators to drive change and lagging indicators to measure effectiveness.
The problem is that most small manufacturers are only using half of that equation. Here are five metrics that can change that.
1. Near miss reporting rate
Of all the metrics on this list, near miss reporting rate is the one with the strongest research behind it and the most untapped potential in small manufacturing.
Frank E. Bird's landmark study of 1,753,498 accidents established what is now known as the safety pyramid. His research found a ratio of 1 serious injury for every 10 minor injuries, 30 property-damage accidents, and 600 near-miss incidents. The implication is that near misses are not just noise. They are the early warning system for serious injuries. Every near miss that goes unreported is a data point you never get to act on.
At most small manufacturers, near miss reporting is functionally nonexistent. Not because people don't care, but because the friction of reporting on paper is too high for events that didn't result in injury. The rational calculus for a frontline worker is simple: if nothing bad happened and reporting takes 15 minutes, it's not worth doing.
The benchmark for a healthy near miss reporting culture is generally considered to be more than five reports per employee per year. Fewer than one report per employee per year typically indicates severe under-reporting. Most paper-based small manufacturers fall into the severe under-reporting category.
The metric to track is total near miss reports per month divided by total headcount. Plot it monthly. A rising trend means your reporting culture is strengthening. A flat or declining trend, especially if your operations haven't changed, means hazards are going unrecognized or unreported.
What makes this metric actionable is the follow-up. Every near miss report that results in a visible corrective action sends a signal to the workforce that reporting is taken seriously. The National Safety Council's Campbell Institute has published extensively on the connection between near miss reporting volume and the effectiveness of corrective action response. When workers see their reports leading to real changes, reporting volume increases. When reports disappear into a binder, reporting stops.
2. Corrective action closure rate
A corrective action that gets identified but never closed is worse than useless. It creates a documented record that you knew about a hazard and failed to address it.
Corrective action closure rate measures the percentage of identified corrective actions that are completed and verified within a defined timeframe. Industry benchmarks suggest that organizations should target a closure rate above 90%. A rate between 70% and 89% indicates moderate performance with room for process improvement. A rate below 70% signals that corrective actions are accumulating into a backlog faster than your team can resolve them.
At small manufacturers without a digital tracking system, the closure rate is often unknown because there is no systematic way to track corrective actions from identification through resolution. Actions get noted on inspection reports, assigned verbally, and forgotten. The same hazard gets flagged again at the next inspection, and the cycle repeats.
The metrics to track are total corrective actions opened per month, total closed per month, percentage closed within the target timeframe, and average days from identification to closure. If your average closure time is creeping upward or your closure rate is below 80%, you have a systemic issue that needs attention.
Track this by source as well. Are your corrective actions coming from inspections, incident investigations, near miss reports, or employee observations? A corrective action pipeline dominated by inspection findings and incident investigations, with very few from near miss reports or employee observations, tells you that hazards are only being captured reactively.
3. Safety training completion percentage
OSHA requires employers to provide training to workers who face hazards on the job. But the standard for most small manufacturers is not whether training was provided. It's whether training was provided on time, to the right people, with documentation that can be produced on demand.
Safety training completion percentage measures the proportion of required safety training that has been completed on schedule. This includes initial training for new hires, recurring refresher training, and job-specific training triggered by changes in equipment, processes, or regulations.
The gap between "we do training" and "we can prove training" is where most small manufacturers fail. A study cited by the Bureau of Labor Statistics found that inadequate training is a contributing factor in a significant percentage of workplace injuries. OSHA inspectors regularly cite training documentation gaps as violations, and the inability to produce records during an inspection can escalate a minor finding into a more serious citation.
The metric to track is the percentage of employees who are current on all required training, measured monthly. This should be broken down by training type (forklift, lockout/tagout, confined space, hazard communication, and any other site-specific requirements) and by department or location.
A simple red/amber/green dashboard showing which employees are current, approaching expiration, or overdue provides more actionable information than an annual training log review. The goal is 100% compliance at any given point in time, with any gap triggering an immediate scheduling response.
4. Safety inspection completion rate
Safety inspections are one of the most common leading indicators recommended by OSHA. The agency's guide on leading indicators specifically calls out the frequency and thoroughness of workplace inspections as a key measure of safety program activity.
The metric seems straightforward: how many scheduled inspections were actually completed on time? But in practice, at small manufacturers, inspections are often the first thing that gets deprioritized when production demands increase.
If your inspection schedule calls for weekly department walkthroughs and you're averaging 60% completion, the 40% gap represents time when hazards could have been identified and addressed but were not. That gap has a direct relationship to your corrective action pipeline and, ultimately, your incident rate.
The metrics to track are number of scheduled inspections per month, number actually completed, completion percentage, and average findings per inspection. A declining completion rate is an early warning that safety activities are losing ground to operational pressure. A declining findings-per-inspection rate, if paired with a stable or rising incident rate, suggests that inspections are becoming routine checklists rather than genuine hazard identification exercises.
OSHA's Voluntary Protection Programs require participating worksites to conduct regular, comprehensive safety inspections. Facilities in the VPP program have DART rates that are 52% below their industry averages. The inspection discipline is a significant contributing factor to those results.
5. Experience modification rate (EMR) trend
EMR is technically a lagging indicator, but tracking its trend over time turns it into one of the most strategically valuable metrics available to a small manufacturer.
Your EMR is calculated by your workers' compensation insurance carrier based on your company's claims history compared to others in your industry and state. An EMR of 1.0 means your claims experience is average. Above 1.0 means you're paying more than average. Below 1.0 means you're paying less.
For a manufacturer paying $200,000 annually in workers' comp premiums, the difference between an EMR of 1.3 and 0.8 is $100,000 per year. That is real money that flows directly to the bottom line.
But the EMR's strategic value goes beyond insurance costs. An increasing number of general contractors and large manufacturers require subcontractors and suppliers to meet EMR thresholds as a condition of doing business. An EMR above 1.0 can disqualify you from bidding on contracts. An EMR trending downward over three years tells customers and partners that your safety program is working and improving.
The metric to track is your EMR annually, plotted as a three-year trend. Pair it with your TRIR and DART rates to create a complete picture of both the frequency and financial impact of your safety performance. If your TRIR is declining but your EMR is not, it may indicate that the severity of the incidents you are having is increasing even as frequency decreases. That's a different problem requiring a different response.
Why these five metrics matter together
No single metric tells the full story. But together, these five create a feedback loop that connects proactive effort to measurable outcomes.
Near miss reporting rate tells you whether your workforce is engaged in identifying hazards. Corrective action closure rate tells you whether identified hazards are actually getting fixed. Training completion percentage tells you whether your people are prepared for the work they're doing. Inspection completion rate tells you whether your program is consistently active. And EMR trend tells you whether all of that effort is translating into measurable financial results.
OSHA's guidance on leading indicators makes the case clearly: organizations that track both leading and lagging indicators in combination have a more complete view of their safety performance and are better positioned to prevent incidents before they occur.
For small manufacturers, the barrier to tracking these metrics has historically been the administrative burden. Calculating near miss rates, tracking corrective action closures, and monitoring training compliance by hand is time-consuming and error-prone. That reality is changing as digital safety management tools make these metrics automatic byproducts of daily safety operations rather than separate reporting exercises.
If you're only looking at TRIR and workers' comp costs, you're seeing a fraction of the picture. These five metrics won't just tell you what happened. They'll show you what's about to.
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*Will Hack works in safety solutions at iReportSource, a Cincinnati-based company that combines EHS software with outsourced safety services for small and mid-sized businesses in manufacturing, construction, and food production.*
*This article was previously published on LinkedIn.*
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