This research study is to analyze the effect of workplace design on employee productivity through the mediating role of comfort at job. Workplace is an essential factor for the employees. A good and pleasant workplace keeps employees motivated and comfortable which will ultimately result in increased employee productivity. Suitable working conditions will provide comfort to the employees, which in turn will help employees to achieve their goals and objectives while poor working conditions will have negative effect on employee performance and productivity. Employees are the key factor for any organization to become successful and competitive. The organizations/businesses that have effective and efficient employees also have competitive edge in the market. It is responsibility of organizations and businesses to create such an environment which is productive for employees to increase their own profits. The results show that workplace environment has positive relation with employee productivity through the mediating role of comfort at job. Supervisor:- Fuad Bashir Awan