This paper reports on a study of factors affecting productivity among members of the construction workforce in Turkey. A survey of 82 construction firms in Turkey is undertaken using a questionnaire of 54 questions directed to managers, engineers, architects, and other technical staff. Using the results of the survey, economic and socio-psychological factors that affect labour performance are evaluated and discussed in detail. The results show that monetary factors remain pre-eminent in influencing productivity, but that socio-psychological factors appear to be of increasing importance in this developing economy. (c) 2006 Elsevier Ltd. All rights reserved.