Reduce workload of security officers using NASA-LTX, SOFI, Heart Rate and Energy Expenditure Method

Abstract

Ergonomics is one area of science that study on the workload and fatigue of the workers. The industry needs to increase operational time to 24 hours and 7 days, has become a necessity to meet customer satisfaction. The impact of increasing operating time, necessitated employees working at the night shift, one of which is security officer, with main task of maintaining the safety and security of the company and its employees for 24 hours. Working the night shift can lower performance and interfere of health, because it causes drowsiness, fatigue and physical sluggishness. The objectives of this research is to evaluate the workload of the security officers working the night shift. This research using SOFI, NASA-TLX, Heart Rate and Energy Expenditure method. Results of this research prove that methods can used to determine the workload, with light categories. The Security officer experience fatigue after working 5 days consecutive, be marked the emergence of drowsiness. As a recommendation, a good of work shift rotation systems is shorter rotation system, i.e. 2 days of morning shift; 2 days of day shift; 2 days of nights shift, and 2 days off, with this rotation system, security officer will only experience a mild drowsiness.