Comparison of weighted-full time equivalent (W-FTE), conventional FTE, and NASA TLX in mental workload analysis (a case study)

Abstract

Human resources is one of the company’s most important resources. The optimum performance of each employee will undoubtedly be achieved when the workload given to each employee is evenly distributed. Therefore, a workload measurement is required to identify whether each employee’s given workload is evenly distributed. XYZ Inc. is a steel manufacturing company. The production process for each order can take about 1-3 months. Especially for production in the Pressure Part, it can take a long time due to the product’s shape, massive volume, and complexity. In this research, workload measurements were conducted with employees (n=7) of the Production Planning Control of the Pressure Part using a combination of weighted FTE, conventional FTE, and NASA-TLX. The obtained index value results using the FTE is 1.69 (overload), and using W-FTE is 2,3 (overload). The result of the NASA-TLX method is an average WWL value of 76.19 (high). Index of W-FTE is after the FTE index value has been determined, the optimal number of employees is calculated based on the FTE index. Based on the results, adding three new employees (n=10) to equalize the workload in production planning control is necessary to lower the average FTE index value by 1.18 (inload).