Work Sampling Using REFA: A Case Study in a Construction and Agricultural Vehicles Company

In recent years, the competition environment was not as challenging as it is today, so companies could increase profits by increasing their selling prices. However, the companies have to reduce costs in order to be able to make profit in these days due to fact that the globalization has brought competition environment. The one of the most important way to minimize cost in assembly lines is to eliminate or minimize non-productive times. Work sampling is one of the cheapest and the simple method in order to determine the non-productive times. In this study, work sampling is applied with the REFA (Reichsausschuss Für Arbeitszeitermittlung) standards in a company that assemble construction and agricultural vehicles. The samples are determined by statistical methods and certain recommendations are offered to eliminate non-productive times