This article compares the techniques developed for lean construction with those developed for lean manufacturing. Lean manufacturing and lean construction techniques share many common elements despite the obvious differences in their assembly environments and processes. Manufacturing plants and construction sites are different in many ways that might explain why lean production theories and practices do not fully fit the construction industry. Though many lean construction tools and elements are still in an embryonic state, lean construction techniques are gaining popularity because they can affect the bottom line of projects. Additionally, this paper presents a study of a construction project in which specific lean construction elements were tested. Each technique was evaluated in terms of its impact on the performance of the project. Based on the findings of the study, a new "lean assessment tool" is proposed to quantify the results of lean implementations. The assessment tool evaluates six lean construction elements: last planner, increased visualization, huddle meetings, first-run studies, five S's, and fail safe for quality. This paper provides a simple and comprehensive approach that is transferable to any construction project.

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Background: Recent reports indicate that construction workers are at a significant risk of musculoskeletal disorders. While there are several reviews investigating the association between psychosocial factors and musculoskeletal disorders, there are none focusing on those specific to the construction industry. Objective: To review and critically appraise the current epidemiological literature linking psychosocial work factors to musculoskeletal disorders among construction workers. Methods: An online search of relevant databases was conducted. The quality of identified articles was assessed using a quality scoring checklist. The evidence from selected studies was summarized and the results of the critical appraisal were discussed. Results: Eight cross-sectional and two cohort studies were included in this review. High job stress was the most commonly investigated factor followed by job satisfaction, job control and high quantitative job demands. All studies reported an association between musculoskeletal disorders and at least one psychosocial factor. Many of the associations reported were significant even after adjusting for demographics and physical demands of the job. Conclusion: Despite some methodological concerns discussed in this review, there is evidence that psychosocial factors are associated with musculoskeletal disorders. This information is essential to the construction industry since most intervention programmes focus only on the physical demands of the job.

Women face unique challenges to work and establish themselves in non traditional occupations such as construction trades. Existing research on women in construction focuses on engineers and entrepreneurs, yet little to no attention has been given to women in trades. Thus, the aim of this research is to review literature on tradeswomen, and to conduct a localized study to determine if demographic variables affect satisfaction with work, pay, opportunities, supervision, and people on the job for tradeswomen. These variables include age, education, number of dependents, number of trade years, duration of work, and frequency of work outside of the local area. Thirtynine tradeswomen from the Cincinnati area were surveyed to assess their satisfaction or dissatisfaction with construction work. Currently, literature review indicates that research on tradeswomen is limited and largely restricted to identifying measures that can attract and retain women in construction trades. Studies on motivation and job satisfaction of construction workers neither identify nor compare perceptions of tradeswomen about their work. Results of this exploratory study showed that pay, benefits, and job security are most important to women in their occupation. Although tradeswomen appear to be satisfied with the nature of work in construction trades, this is not the case in terms of pay, benefits, and job security. Demographic variables did not affect the level of job satisfaction for women in construction trades. Research on tradeswomen is essential and important as the industry tries to change its image, encourage diversity in order to mitigate labor shortage.