The main purpose of this study is to explore the relationship between organisational behaviour (OB) and concurrent engineering (CE). A conceptual model has been established, in which OB factors are classified under six major categories. Using a questionnaire based on the model, the relationship between OB and CE has been studied in 161 responded companies from different selected industries in Isfahan province of Iran in 2005. The results reveal that major barriers to the development of CE are: 1) being responsible; 2) risk taking; 3) compensation ways; 4) creativity and innovation (in organisational communication); 5) oral communication; 6) entrepreneurial attitude; 7) achievement motivation. The relationship values between OB factors and CE have been found less than 0.323 in all categories. The outcomes are believed to enhance the capabilities of managers in dealing with OB effectiveness, which in turn leads to the development of entrepreneurship.