Objective To conduct a comprehensive risk assessment of occupational hazards in employers within Jiading District, Shanghai, thereby providing a technical basis for the implementation of occupational health categorical supervision.

Methods From January to April 2024, a comprehensive self -inspection and assessment of occupational hazard risks were conducted across all 12 towns/subdistricts of Jiading District, in accordance with the "Method for Comprehensive Risk Assessment of Occupational Hazards in Employers" outlined in the national work plan.

Results Among the 1 848 enterprises surveyed in Jiading District, 91.94% were small and micro -sized enterprises (SMEs). The classification of comprehensive occupational hazard risk was predominantly "Category A" (lowest risk), accounting for 48.65% (899 enterprises), while "Category C" (highest risk) was the least prevalent, with 159 enterprises (8.60%). Statistically significant differences (P < 0.05) were observed in the risk classifications across different enterprise scales, SMEs had a higher proportion of "Category C" compared to large and medium-sized enterprises. Regarding occupational health status grading, the percentages of Grade A, Grade B, and Grade C were 39.72%, 35.88%, and 24.40%. The compliance rates of declaration of occupational hazards, periodic monitoring of occupational hazard factors, occupational health examinations during employment, and training of primary responsible persons and occupational health management personnel were 97.56%, 95.13%, 91.83%, and 91.56%, respectively. The differences in these compliance rates were statistically significant (all P < 0.05) across enterprise scales, consistently being highest in large enterprises (100%) and lowest in micro -sized enterprises. Among the 1 848 enterprises, 1 436 should have completed a current status evaluation of occupational hazards within the past three years; only 817 enterprises fulfilled the evaluation work as required, with the evaluation rate of 56.89%; this evaluation rate decreased with diminishing enterprise size with statistical significance (P < 0.05).

Conclusions The overall occupational health status of employers in Jiading District, Shanghai, was relatively good. However, the concerning issues were notably concentrated in SMEs, particularly micro -sized enterprises, which demonstrate a comparatively higher comprehensive risk of occupational hazards. It is imperative to reinforce support and guidance for SMEs and to effectively advance differentiated occupational health supervision.