The Role of Workers’ Intentions for the Effectiveness of Ergonomic Interventions

Anizar Anizar, Abdul Rahim Matondang, Rizabuana Ismail, Nazaruddin Matondang


Persisting pain complaints experienced by palm oil workers caused by manual material handling activities can be alleviated with an ergonomics intervention. However, its effectiveness greatly depends on workers’ acceptance, whether to accept or reject the ergonomic programs. This study examines workers’ intention to accept ergonomic interventions based on reason action theory and technology acceptance models. Other factors influencing workers’ acceptance, namely perceived usefulness, ease of use, and trust, are also considered. The participants are workers on the process production in several palm oil mills in North Sumatra Province. The data were then modeled using Partial Least Squares Structural Equation Modeling and were analyzed using WarpPLS 3.0 – a data analyzing software. The correlation between perceived usefulness, ease of use, and trust towards ergonomics intervention was hypothesized to be fully mediated by workers’ intention. The novelty of this research is the consideration of workers’ perceptions to implement the ergonomics program effectively. The result shows that workers’ intentions are significant enough to predict the effectiveness of ergonomics intervention (ꞵ = 0.193). However, workers’ intention only partially mediates the correlation between perceived usefulness (ꞵ = 0.063) and perceived trust (ꞵ = 0.063) toward ergonomic intervention. It does not significantly mediate the correlation between perceived ease of use and ergonomic intervention (ꞵ = 0.039; p=0.063).

Keywords: perceived usefulness, perceived ease of use, perceived trust, workers’ intentions, ergonomics intervention.

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