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Reinforcement work takes charge of approximately one-third of the reinforced concrete work that covers more than 30% of total construction cost and depends on labor intensive production. Despite, therefore, the comprehensive improvement of working process should be followed, it is confirmed through the survey of previous research that the research of work model considering working process and motion of rebar workers has not been carried out. The purpose of this paper is to build a work model of efficient rebar work process through the productivity analysis by work sampling and simulation.The model proposed in this research would be used for not only reducing non-productive activities but also providing the clues of productive rebar work, and eventually give the opportunity of cost reduction.