Impact of Shift Work on Labor Productivity for Labor Intensive Contractor

Hanna, Awad S.; Chang, Chul-Ki; Sullivan, Kenneth; Lackney, Jeffery A.

doi:10.1061/(asce)0733-9364(2008)134:3(197)

Cited by 106 publications

(66 citation statements)

References 6 publications

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“…Therefore, it is a common objective of all the construction companies to offer better value against minimum cost [1,2]. On-site labor costs are among the most profit-influencing factors [3]. To reduce them, it is important to improve the labor productivity by identifying and addressing the areas of high and low productivity [4].…”

Section: Introductionmentioning

confidence: 99%

Labor Productivity Assessment Using Activity Analysis on Semi High-Rise Building Projects in Pakistan

Sheikh¹,

Ullah²,

Ayub³

et al. 2017

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Abstract. Construction organizations strive to increase their competitiveness by reducing the project costs especially labor cost. Optimizing labor productivity will ensure value for money. In the face of no guidelines available for local construction industry, research must be directed to benchmark construction labor productivity in building projects of Pakistan. Based on a thorough review of established productivity assessment methods, Activity Analysis is performed on five local semi high-rise building projects. Statistical analysis is carried out to identify labor productivity trends in seven standard areas. Further, sensitivity analysis is carried out to characterize the positive and negative influencers. It is revealed that labor spends a little more than one-third of working time in direct and support activities each, and one-quarter in delay activities. Furthermore, delay and support activities are correlated with direct work. Direct work is observed at its peak during midday hours, and lowest during the start and end of workday. The study is an original effort in benchmarking the labor productivity in construction projects of Pakistan. Based on the findings, productivity improvement strategies are proposed from which projects can benefit in the form of optimized costs and schedules. Results are of relevance towards understanding the labor productivity in developing countries.

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Section: Introductionmentioning

confidence: 99%

Labor Productivity Assessment Using Activity Analysis on Semi High-Rise Building Projects in Pakistan

Sheikh¹,

Ullah²,

Ayub³

et al. 2017

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“…Hanna et al (2008) found that shift schedule is effective as compared to overtime and overmanning in reducing the project duration. The authors opined that the use of shift schedule reduces physical fatigue and site congestion that could occur if overtime and overmanning practices are implemented.…”

Section: Construction Methods Influencing Productivity In Constructiomentioning

confidence: 97%

A study of best management practices for enhancing productivity in building projects: construction methods perspectives

Gurmu

Aibinu

Chan

2016

CEB

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This research investigates management practices that have the potential to enhance productivity in building projects by focusing on construction methods. In phase 1 of the study, face-to-face interviews with nineteen experts were conducted to identify the best management practices for construction methods. The qualitative data analysis reached saturation and resulted in a list of best practices for construction methods that are relevant to the local industry. The second phase used an industry-wide survey to prioritize the best practices. Accordingly, project start-up plan, traffic control plan, machinery positioning strategy, project completion plan, and dynamic site layout plan were shown to be the top five best practices for construction methods. The study also revealed that high levels of implementation of best practices are associated with low levels of project delays. The use of best practices also varied according to the project costs. There were no discernible differences between the top five best practices. The authors suggest that they should be implemented jointly to improve productivity in building projects. Contractors could use the logistic regression model developed, to predict the probability of exceeding a baseline productivity factor and, on that basis, implement corrective actions to achieve the desired level of productivity.

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“…Productivity increase problem has long been a concern of researchers. Based on previous studies, key factors that can a ect labor productivity in construction have been obtained from studies by Lim and Alum [9], Olomolaiye et al [10], Ibbs [11], Nepal et al [12], Enshassi et al [13], Alinaitwe et al [14], and Hanna et al [15], among many others. Most researchers work on the factors a ecting the labor productivity; however, there are some other studies on productivity.…”

Section: Introductionmentioning

confidence: 99%

Assessment of labor productivity in construction projects using system dynamic approach

et al. 2017

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Abstract. Labor productivity is one of the most important factors in achieving project success at di erent stages of a project. In this research, a new method is presented to model labor productivity for di erent types of contractors based on System Dynamic (SD) simulation. Using cause and e ect feedback loops, a qualitative model is constructed. The relationships between di erent parameters are then determined by expert's judgment and real data obtained from several real projects, and the quantitative model is built. The labor productivity is simulated by the proposed SD model, considering all a ecting factors. For higher accuracy, the model is examined on two types of contractors and two models are constructed. The total productivity of each contractor is obtained, and the e ect of di erent parameters on the labor productivity is investigated.

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Impact of Shift Work on Labor Productivity for Labor Intensive Contractor

Cited by 106 publications

References 6 publications

Labor Productivity Assessment Using Activity Analysis on Semi High-Rise Building Projects in Pakistan

Labor Productivity Assessment Using Activity Analysis on Semi High-Rise Building Projects in Pakistan

A study of best management practices for enhancing productivity in building projects: construction methods perspectives

Assessment of labor productivity in construction projects using system dynamic approach

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