<![CDATA[Preventing workplace accidents in construction projects relies heavily on the level of worker discipline and compliance regarding the use of Personal Protective Equipment (PPE). Despite established Occupational Health and Safety (OHS) regulations, worker non-compliance remains a common issue in the field, posing a significant challenge for safety management. This study aims to analyze in depth the relationship between factors such as knowledge, attitude, supervision, and PPE availability and the compliance with PPE usage in the work area. Using a quantitative cross-sectional design, 80 respondents were selected via accidental sampling from a total workforce of 355 at PT Huathai Constructions Indonesia. Data were collected through questionnaires and analyzed using a staged approach (univariate, bivariate, and multivariate). Bivariate analysis revealed that all independent variables—knowledge, attitude, supervision, and PPE availability were significantly associated with compliance (p < 0.05). Multivariate analysis identified PPE availability as the strongest predictor (p = 0.007; OR = 25.492). The study concludes that ensuring the availability of safety equipment by the company is the primary factor in improving worker compliance with OHS standards.]]>
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