On-site Labour Productivity of New Zealand Construction Industry: Key Constraints and Improvement Measures

Serdar Durdyev, Jasper Mbachu


Productivity is key to the survival and growth of any organisation, industry or nation. Some factors constrain the achievement of the set project objectives in the New Zealand building and construction industry and are responsible for the reported steady decline of productivity and performance. This study aims to identify the key constraints to on-site labour productivity and improvement measures. Using the descriptive survey method, views of some project managers, contractors and subcontractors in New Zealand were canvassed via pilot interviews and questionnaire surveys at the qualitative and quantity data gathering stages, respectively. Multi-attribute technique was used to analyse the quantitative data. Results showed that the key external constraints to on-site labour productivity comprise, in order of decreasing impact, statutory compliance, unforeseen events and wider external dynamics. The internal constraints, which contribute 67 percent of the onsite productivity issues, comprise reworks, level of skill and experience of the workforce, adequacy of method of construction, buildability issues, and inadequate supervision and coordination. . The factors underlying each broad category of external and internal constraints are reported. The relative levels of impact of the identified constraints are expected to guide the project team in addressing the constraints in a cost-effective manner.


Construction management, labour productivity, New Zealand construction industry, performance improvement, productivity constraints.

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Abdul Kadir, M.R., Lee W.P., Jaafar M.S., Sapuan S.M. and Ali A.A.A. (2005) Factors affecting construction labour productivity for Malaysian residential projects" Structural Survey, 23 (1), 42-54

Alinaitwe, M.H., Mwakail, J.A. and Hansson, B. (2007) Factors affecting the productivity of building craftsmen: Studies of Uganda, Journal of Civil Engineering and Management, XIII (3), 169-176"

Building and Construction Sector Productivity Taskforce (BCSPT) (2009) A modern efficient and productive New Zealand built infrastructure industry. Report of the Building and Construction Sector Productivity Taskforce, Department of Building and Housing, Wellington, New Zealand"

Burati, J.L., Farrington, J.J. and Ledbetter W.B. (1992) Causes of quality deviations in design and construction, ASCE Journal of Construction Engineering and Management, 118 (1), 34-49"

Carlos, C. and Paul, D. (2010) Effortless productivity tracking, White Paper #21, Breakthrough Strategy Committee, London, UK, Accessed 08 February 2011 from: https://www.construction-institute.org/scriptcontent/btsc-pubs/CII-BTSC-121.doc"

Chang, C. and Ive, G. (2002) Rethinking the multi-attribute utility approach based procurement route selection technique, Construction Management & Economics, 20 (3), 275-284"

Clayton, C.R.I. (2001) Managing Geotechnical Risk: Improving Productivity in UK Building and Construction, 1st edition, Thomas Telford, London

Construction Strategy Group (CSG) (2010) Why is this Industry Important to New Zealand and New Zealanders?, Accessed 10 March from http://www.constructionstrategygroup.org.nz/industry.php

Cooper, D.R. and Schindler, P.S. (2006) Business Research Methods, 9th Edition, McGraw-Hill/Irwin, New York

Cooper, K.G. (1993) The rework cycle: benchmarking for the project manager. Project Management Journal, 24 (1), 17-22"

Davis, N. (2008) Building and Construction Sector, Summary Report, Accessed 08 December 2010 from: http://www.dbh.govt.nz/UserFiles/File/Building/sectorforum/Draft%20Summary%20Productivity%20Report%20for%20Forum.doc"

Department of Building and Housing (DBH) (2009) Report of the Building and Construction Sector Productivity Taskforce, Accessed 20 October 2010 from: http://www.dbh.govt.nz/UserFiles/File/Building/sector-forum/Sector-Productivity-Taskforce-Report.pdf

Department of Building and Housing (DBH) (2008) Briefing for the Minister of Housing. Wellington: Department of Housing, (November), Accessed 10 March 2010 from http://www.dbh.govt.nz/UserFiles/File/AboutUs/Strategic-Direction/pdf/BIM-housing-nov08.pdf

Duncan, J.R. (2002) Innovation in the building sector: Trends and new technologies, Conference paper No. 95, IPENZ Convention, Wellington, 25 March, 1-9"

Egan, J., (1998) Rethinking construction. Report of the Sir John Egan"s Construction Task Force (July), London: HMSO"

Enshassi, A., Mohamed, S. Mustafa A.Z. and Mayer, P.E. (2007a) Factors affecting labour productivity in building projects in the Gaza Strip, Journal of Civil Engineering and Management, XIII (4), 245-254"

Enshassi, A., Mohamed, S., Mayer, P. and Abed, K. (2007b), Reflective practice: Benchmarking masonry labor productivity, International Journal of Productivity and Performance Measurement, 56 (4), 358-368"

Fabling, R. and Grimes, A. (2008) The suite" smell of success: Complementary personnel practices and firm performance', Discussion Paper DP2009/13, Reserve Bank of New Zealand, Wellington, (December), Accessed 10 March 2011 from http://www.rbnz.govt.nz/research/discusspapers/dp09_13.pdf"

Henriod, E.E. (2010) An experience raising productivity, Constructing New Zealand, Issue 14 (February), 10-11"

Henriod, E.E. and Lantran, J.M. (2000) Trends in contracting practice for civil works, Site Resources, World Bank, New York, 1-9"

Jarkas, A.M. (2010) The effects of buildability factors on rebar fixing labour productivity of beamless slabs, Australasian Journal of Construction Economics and Building, 10 (1/2)"

Jergeas, G., (2009) Improving construction productivity on Alberta oil and gas capital projects. A Report Submitted to: Alberta Finance and Enterprise, University of Calgary, Accessed 25 February 2011 from: http://www.alberta-canada.com/documents/Improving_Construction_Productivity.pdf"

Kazaz, A., Manisali, E. and Ulubeyli, S. (2008) Effect of basic motivational factors on construction workforce productivity in Turkey, Journal of Civil Engineering and Management, 14 (2), 95-106"

Knutson, K., Schexnayder, C.J., Fiori, C. and Mayo, R.E. (2009) Construction Management Fundamentals, 2nd Edition, McGraw-Hill, New York

KPMG (2009) Managing construction risk, A White Paper on Industry Perspectives and some Recommendations, Audit Committee Institute, KPMG International, (March), 1-8"

Lam, P. and Wong, F.W. (2009) Improving building project performance: How buildability benchmarking can help, Construction Management and Economics, 27 (1), 41-52"

Lam, P., Chan, A., Wong, F.K. and Wong, F.W. (2007) Constructability rankings of construction systems based on the analytical hierarchy process, ASCE Journal of Construction Engineering and Management, 13 (1), 36-43"

Leedy, P.D. and Ormrod, J.E. (2009) Practical Research: Planning and Design, 9th Edition, Pearson Education, Upper Saddle River, New Jersey

Love, P. and Li, H. (2000) Quantifying the causes and costs of re-work in construction, Construction Management and Economics, 18, 479-490"

Love, P., Mandal, P. and Li, H. (1999) Determining the causal structure of re-work influences in construction, Construction Management and Economics, 17, 505-517"

Mbachu, J. (2008) Conceptual framework for the assessment of subcontractors' eligibility and performance in the construction industry, Construction Management & Economics, 26 (5), 471-484"

Mbachu, J. and Nkado, R. (2007) Factors constraining successful building implementation in South Africa, Construction Management and Economics, 25 (1), 39-54"

McCullouch, B. (2007) Automating field data collection in construction organizations. Proc., 5th Construction Congress: Managing Engineered Construction in Expanding Global Markets, Minneapolis, 957-963"

McShane, O. (1996) The impact of the resource management act on the Housing and Construction" Components of the Consumer Price Index", A Report Prepared for the Reserve Bank of New Zealand, Accessed 26 February 2011 from: http://www.rmastudies.org.nz/documents/ResBankF.pdf"

Mojahed, S. and Aghazadeh, F. (2007) Major factors influencing productivity of water and wastewater treatment plant construction: Evidence from the deep south USA. International Journal of Project Management, 26 (2008), 195-202"

Oglesby, C., Parker, H., and Howell, G. (1989) Productivity Improvement in Construction', New York: McGraw-Hill Book Company

Page, I.C. (2010) Construction industry productivity, Study Report SR 219, Building Research Association of New Zealand (BRANZ), Wellington, New Zealand"

Saghatforoush, E., Hasim, S., Jaafar, M., and Abdul Kadir, M. (2009) Constructability implementation among Malaysian building contractors. European Journal of Scientific Research, 29 (4), 518-532"

Sanders, S. R. and Thomas, H. R. (1993) Masonry productivity forecasting model, Journal of Construction Engineering and Management, ASCE, 119 (1), 163-179"

Thomas, H. R. and Sakarcan, A. S. (1994) Forecasting labor pro- ductivity using factor model. Journal of Construction Engineering and Management, ASCE, 120 (1) 228-239"

Tran, V and Tookey, J. (2011) Labour productivity in the New Zealand construction industry: A thorough investigation, Australasian Journal of Construction Economics and Building, 11 (1), 41-60"

Wilkinson S and Scofield S, (2010), Management for the New Zealand Construction Industry, 2nd Edition, Pearsons