A problem of workers' evaluation and placement in an industrial environment is studied in this paper; an effect of workers' relationship on their placement is newly included in this paper. Evaluating workers' suitability is important when decision makers select proper candidates under various evaluation criteria among available human resources and jobs. For problems of this type, an analysis using a fuzzy number approach promises to be potentially effective. In order to make a more convincing and accurate decision, the relationship between jobs is included in the workers' assignment in an industrial environment. The fuzzy suitability evaluation is performed by means of aggregating the decision makers' fuzzy assessment. Examples of typical application are also presented: the results demonstrate that the workers' relationship is an important factor and our method is effective for the decision making process.