The questionnaire has three fragmen

The questionnaire has three fragments namely, demographic details, QWL scale and WLB scale. The first fragment of the questionnaire encompasses the questions related to demographic profile of the respondents such as age group, gender, qualification, experience, etc. The second fragment of the questionnaire includes the questions related to the QWL, which was developed based on Nguyen’s QWL scale. The third section contains the questions related to the Work-Life Balance which was formulated based on the Grzywacz and Carlson15 scale. The reliability of the scales was assessed and tabulated in Table 1. Reliability of the data collection instrument was identified through Cronbach alpha coefficient. From the Table 1, it was identified that the reliability coefficient of certain constructs during pilot study was not in acceptable level (i.e. less than 0.75), but the same was improved during the main study and it was also found that all the sub-constructs mentioned in the Table 1 has the reliability Cronbach coefficient value more than 0.75. Hence it is established that the data collection instrument used in this research is an appropriate tool to measure the impact of QWL on WLB in construction industry.