Abstract

The worker is one of the important factors in Small Medium-sized Enterprise (SME) because of manual production. Workload and daily production target influence worker productivity. The research objectives are: 1) To measure worker physical and mental workload in Bakery SMEs; 2) To analyze the relationship between physical, mental workload and productivity. The case study of research is in SME an anonymous bakery SME in Sleman. Physical workload indicator was based on heart rate. Heart rate was measured using wrist pulsemeter. Cardiovascular load percentage was calculated using measured heart rate work and leisure time. Mental workload indicator was measured NASA-TLX questionnaire. It had six indicators as mental, physical, temporal demand, performance, effort, and frustration level. Productivity was identified by the dough output. The relationship between physical, mental workload and productivity were analyzed using polynomial quadratic regression. The result concluded the worker productivity in bakery SME was influenced by physical and mental workload as much as 80.8 % and 19.2 % influenced by other factors. The result of 80.8 % was significant compared to the other one in SMEs. This result provided the linear model opportunity to be used easily instead of non-linear to define the worker and production system interaction in SMEs.

Keywords

Heart rate, Polynomial quadratic regression, Questionnaire of NASA-TLX

References