As blue-collar construction workers are the critical source among production factors of the labor-intensive construction industry in Korea, the improvement of the labor environment including employment stability, realistic remuneration are emergently required. In view of this, the study, based on the associated primary data, attempts to analyze installation condition in construction sites and installation criteria in a large-sized construction company on the convenience facilities for construction site workers, and to investigate satisfaction level of the blue-collar construction workers on that ones. The study further suggests some realistic informations upon which the efficient improvement measures for the blue-collar construction workers possibly are prepared. The results of this study are provide practical basic data for establishment of realistic as well as reasonable policies/programs for the working milieu improvement.