While considering the phenomenon of Productivity & Resource Efficiency, the first thing which comes to mind is the tools and techniques to achieve these parameters. One of those sets of tools is called lean tools and it helps in streamlining organizational processes. Lean supply chain is not limited exclusively to the companies who are into product manufacturing but for the businesses and firms whose focus is to eliminate waste and remove non value adding elements from the supply chain. In this paper, we are aiming at identifying the importance of lean tools and focusing on finding their significance in the day-to-day supply chain of the firms. We are also doing an overview of the impact of lean tools on the Human Resources of the firms. For this study purpose, we are using the Delphi technique with a lean-oriented survey to get insights from lean professionals.