What question did this study set out to answer?

This research aims to understand how different types of fatigue affect unsafe behaviors in construction operators.

A hybrid SEM-FCM approach for data-driven fatigue risk management in construction

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Randomized trial analyzes fatigue impacts on unsafe behaviors in construction operators, suggesting targeted risk management strategies.

This research aims to understand how different types of fatigue affect unsafe behaviors in construction operators.
Analyzed 301 excavator operator surveys using structural equation modelling
Identified fatigue interactions and their impact on safety attitudes
Utilized fuzzy C-Means clustering to categorize operators into risk groups.
Muscular fatigue has the strongest direct link to unsafe behaviors, while cognitive fatigue shows the largest overall association.
Operators in the high-risk group exhibit 72.12% more unsafe behaviors due to high muscular-cognitive fatigue and negative safety attitudes.
Safety attitudes partially mediate the effects of fatigue dimensions on unsafe behaviors.

Tian et al. (2026) studied this question.

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