Impact of occasional overtime on construction labor productivity: quantitative analysis

Date

2007-07-01

Author

Sönmez, Rifat

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

73
views

0
downloads

Scheduled and occasional overtime practices have been used frequently in the construction industry. Past research indicated that continuous scheduled overtime could have a negative effect on labor productivity. The impact of occasional overtime on productivity is generally expected to be less than the impact of scheduled overtime. However, few studies have evaluated the effects of occasional overtime on productivity, which is the main objective of this paper. Productivity data for 234 weeks were collected for quantitative analysis. The t test was performed initially to determine the statistical significance of the impact of occasional overtime. The assessment of productivity data samples revealed possible deviations from the normal distribution. The Wilcoxon rank sum test was implemented as an alternative to the t test. The results of quantitative analysis indicate that moderate levels of occasional overtime did not have a significant impact on productivity. Based on the findings in this study, the potential advantages of occasional overtime practices are discussed.

Subject Keywords

Civil and Structural Engineering, General Environmental Science

URI

https://hdl.handle.net/11511/42025

Journal

CANADIAN JOURNAL OF CIVIL ENGINEERING

DOI

https://doi.org/10.1139/l07-004

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

Impact of national culture on knowledge sharing in international construction projects KIVRAK, SERKAN; ARSLAN, GÖKHAN; TUNCAN, MUSTAFA; Birgönül, Mustafa Talat (Canadian Science Publishing, 2014-07-01) International construction projects generally involve participants from different cultural backgrounds. In this type of projects, national culture can significantly influence knowledge sharing between individuals. This research contributes to the literature by providing a deeper understanding of cultural issues that influence knowledge sharing in international construction projects. The research was carried out in three international construction joint ventures located in Qatar, Libya, and Bulgaria. A mixed...
Effects of masonry infill walls on the seismic performance of buildings Öztürk, Mehmet Selim; Akyüz, Uğurhan; Department of Civil Engineering (2005) In Turkey, in most of the reinforced concrete buildings, hallow masonry infill walls are used as a non-structural element, during design stage, their contribution to overall building behavior is not well known. Observations made after the earthquakes revealed that these non-structural elements had beneficial effects on the lateral capacity of the building. In this study, the contribution of the hallow masonry infill walls to the lateral behavior of reinforced concrete buildings was investigated. For this pu...
Effects of mix design variables on mechanical properties of hot mix asphalt Güler, Murat (American Society of Civil Engineers (ASCE), 2008-03-01) Compaction of hot mix asphalt after the laydown process is one of the critical steps of construction affecting the service performance of asphalt concrete. It is known that compaction is controlled by a number of mix design variables, i.e., binder type, gradation. asphalt content, and compaction temperature. In this paper, effects of mix design variables on the mechanical properties of hot mix asphalt are investigated based on laboratory compacted specimens. A continuum model is utilized to simulate the lab...
Development of an activity based risk assessment tool using integrated duration – cost influence network Özer, Ahmet Hamdi; Dikmen Toker, İrem; Department of Civil Engineering (2009) As the construction sector is becoming more competitive in recent years, it has become more important to estimate the duration and cost of the construction projects and to calculate the risks’ effects correctly. The aim of this thesis is to estimate the duration and cost of construction projects accurately using an activity based risk assessment method which is based on the integrated duration – cost influence network diagram model proposed by Tah and Poh (2006). Within the context of this thesis, a web bas...
Quantification of Delay Factors Using the Relative Importance Index Method for Construction Projects in Turkey Gunduz, Murat; Nielsen, Yasemin; Ozdemir, Mustafa (American Society of Civil Engineers (ASCE), 2013-04-01) Construction delays are common in construction industry and create major concerns for project performance. Construction delays are caused by many factors. The aim of this paper is to identify delay factors on construction projects and analyze these factors with the relative importance index method. For this purpose, 83 different delay factors were identified, categorized into nine major groups, and visualized by the Ishikawa (fishbone) diagram through detailed literature review and interviews with experts f...

Citation Formats

R. Sönmez, “Impact of occasional overtime on construction labor productivity: quantitative analysis,” CANADIAN JOURNAL OF CIVIL ENGINEERING, pp. 803–808, 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42025.