Labor Productivity Improvement by Reducing Waste in Carwash Process: A Case Study of Carwash Business in Kalasin Province
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Abstract
Labor productivity improvement played a crucial role in increasing operational potential by suitably adjusting workers’ working patterns via waste reduction method. The purposes of this study were to evaluate labor productivity and to implement an approach to reduce waste in the carwash process. The data were collected from 16 key informants through participant observation and in-depth interview methods. The collected data were analyzed by several processes as follows: flow process chart, value-added activities, non-value-added activities but necessary and non-value-added activities, together with Why-Why Analysis, How-How Analysis, 5W1H and ECRS. The findings showed that, after the evaluation had been performed, the productivity scores of team A and B were at 1.85 and 1.96, respectively, car per labor hour. The researcher, thus, implemented an approach to increase labor productivity by reducing waste in the carwash process. It is found that the score of team A increased from 1.85 to 2.47 while that of team B from 1.96 to 2.50 car per labor hour. The operation time of team A was shortened from 32.43 to 24.30 and that of team B was from 31.07 to 24.00 minutes per car. By and Large, the researcher, thus, suggests entrepreneurs focus on increasing labor productivity by reducing waste as it might be useful for this carwash business.
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