Retrospective ecological research in 85 ILO regions evaluates baseline inspector ratios for occupational safety and health performance.

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Frontiers in Medicine Published April 13, 2026 Medically reviewed April 25, 2026 DOI ↗ By Dr. Sofia Müller, MD · Lifespan & Whole-Person Care

Key Takeaway

Consider baseline inspector ratios as preliminary capacity benchmarks for OSH policy improvement.

This retrospective ecological research evaluated the effectiveness and feasibility of baseline inspector ratios across 85 International Labour Organization (ILO) regions, including Malaysia and Saskatchewan. The study compared observed data against the ILO's 2006 press release expectations, though the specific sample size was not reported. The primary outcome focused on determining appropriate baseline inspector ratios for different regional contexts.

Results indicated that five baseline inspector ratios warranted careful consideration based on 95% confidence intervals. Group 1 ratios ranged from 0.87 to 1.5, while Group 2 ranged from 0.44 to 1.5. Groups 3 and 4 showed ranges of 0.49 to 1.5, and the specific ratio for Malaysia was 0.75 to 1.50. Additionally, Saskatchewan's inspector ratio remained stable between 1.0 and 1.5 over the past few years. No adverse events or discontinuations were reported, as safety data were not applicable to this observational design.

The study acknowledges contradictory or limited knowledge in the literature regarding the effectiveness and standardization of inspector ratios. Future researchers are encouraged to examine these gaps. The practice relevance lies in the real-world implications for occupational safety and health risk management policy. The assigned baseline inspector ratios may serve as preliminary capacity ratios to support the continuous improvement of decent occupational safety and health performance.

Key takeaway limitations include the observational nature of the research and the lack of reported sample size or specific p-values. These factors constrain the ability to draw definitive causal conclusions about the impact of inspector ratios on outcomes.

Study Details

Study typeCohort

EvidenceLevel 3

PublishedApr 2026

View Original Abstract ↓

IntroductionOccupational safety and health (OSH) inspectors play significant roles in enforcing OSH policies and monitoring compliance with these policies to sustain decent workplace safety and health performance. However, there is contradictory or limited knowledge in the literature regarding the effectiveness as well as the standardization of the inspector ratios despite the International Labor Organization’s (ILO) initiatives to harmonize OSH policies and frameworks globally since its inception. Therefore, this cross-regional trend analysis research investigated the current inspector ratios to improve decent workplace safety and health performance in 85 ILO regions, including Malaysia and Saskatchewan.MethodsThis retrospective ecological research utilized annual secondary datasets to analyze the effectiveness and feasibility of baseline inspector ratios in ILO regions. This study performed observational trends in research variables with Microsoft Excel graphs. It also computed a total of 20 plus multivariate regression analyses with 95% confidence intervals (CIs) and descriptive statistics using IBM SPSS 30.0 software.ResultsThe visual inspector ratio trends, along with standard error bars, provided additional tools not only for evaluating the effectiveness of the inspector ratios but also for allowing readers to compare these trends to the expectations set out by the ILO’s press release in 2006. This study also validated the literature associated with the effectiveness of inspector ratios. This research has real-world implications for OSH risk management policy, suggesting that the baseline inspector ratios assigned to each regional group may serve as preliminary OSH inspector capacity ratios for the continuous improvement of decent OSH performance.ConclusionFive baseline ratios for the inspector ratios that warranted careful consideration and further investigation to improve OSH risk management policies and performance were group 1: 0.87 to 1.5, group 2: 0.44 to 1.5, groups 3 and 4: 0.49 to 1.5, and Malaysia: 0.75 to 1.50. Saskatchewan’s inspector ratio has been stable (1.0 to 1.5) for the past few years, so this region might also need to investigate other confounders, such as institutional or organizational behavior and OSH culture, to enhance OSH performance. Future researchers might explore or examine the gaps in this study.

Retrospective ecological research in 85 ILO regions evaluates baseline inspector ratios for occupational safety and health performance.

Study Details

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Retrospective ecological research in 85 ILO regions evaluates baseline inspector ratios for occupational safety and health performance.

Study Details

Digital serious games improved public health knowledge and attitudes versus traditional education in 19 countries

Digital games boost health knowledge and attitudes in nonprofessional participants

Clinical research that matters. Delivered to your inbox.

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