A Meta-Analysis of OSHA Safety Training Programs and their Impact on Injury Reduction and Safety Compliance in U.S. Workplaces

Abstract

This study addresses the gap between mandated OSHA aligned safety training and measurable safety outcomes in high exposure enterprise workplaces, where injuries and near misses persist despite formal programs. The purpose was to quantify how OSHA training exposure and perceived quality relate to safety compliance and injury reduction indicators, and to test whether compliance is the pathway through which training improves outcomes. Using a quantitative cross sectional, case-based survey design, data were collected from 312 employees across workplace cases in construction, manufacturing, and healthcare; multivariate models used listwise deletion, yielding N = 306. Key variables were OSHA Training, Safety Compliance, and Injury Reduction Indicators. Analysis followed a plan of data screening, reliability and construct checks (Cronbach alpha, KMO, Bartlett, factor loadings), then descriptive statistics, Pearson correlations, and hierarchical regression to evaluate direct and mediation consistent patterns. Missing data were low (1.8%) and Harman single factor variance was 32.4%, reducing common method bias concerns. Respondents reported above midpoint scores for training (M = 3.84, SD = 0.62), compliance (M = 3.92, SD = 0.58), and injury reduction (M = 3.67, SD = 0.60), with strong reliability (alpha = 0.91, 0.88, 0.86). Training correlated with compliance (r = 0.62) and injury reduction (r = 0.49), and compliance correlated with injury reduction (r = 0.56), all p < .001. In regression, training predicted injury reduction (beta = 0.49, R2 = 0.24) and predicted compliance (beta = 0.62, R2 = 0.39); when both predictors were entered, compliance remained stronger (beta = 0.41) while training attenuated but stayed significant (beta = 0.24), improving fit to R2 = 0.38, consistent with partial mediation. Case pattern summaries converged with the model, with high training groups reporting higher compliance and injury reduction than low training groups. Implications are that organizations should prioritize frequent, job relevant, practice-oriented OSHA training and remove operational pressures that undermine compliance, because compliance is the proximate lever translating training into safer outcomes.