The study has been carried out with the objective to explore the provision of occupational safety and health standards in Nepalese legislation in building construction of Gautam Buddha International Airport. For this building such as international terminal building, administrative building, control tower, and fire rescue block were taken for study and analysis. For this population size, sample size of respondent was taken through purposive sampling method. The study found that enforcement status of rules and regulations at construction site was not satisfactory. Most of the workers even didn’t hear about labour act and labour regulation, yet. There was poor implementation of rules & regulations in project site by contractor. Not even a single project was found of having provision of safety officer and no any factory inspector visit to project site till date by which it could easily predict the implementation status of labour act and labour regulation. While a legal framework has been developed, the proper implementation of such legislation is a must to keep up with changing times. The workers must be aware of safety requirement. A saturator action against the issue should be enforced through strong safety committee.