Integration of Theory of Constraints Thinking Process and Lean Production for Troubleshooting on a Contractor

The thinking process of TOC (Theory of Constraints) was an important consolidated tool to the systematization of the companies’ necessities because of its competitive advantage. The lean thinking proposed by Taiichi Ohno and developed by Toyota Company has been tested and found effective in several production processes. This paper aims to propose a method of problem solving through the integration of the principles of lean thinking and the TPTOC (Thinking Process of the Theory of Constraints). The method was implemented on a civil contractor, using the research methodology and the action research. We concluded that, after the research, the core problem regarding the company is the technical failure of the administrative staff, which causes delay in the construction works and financial loss. We also concluded that the obstacles that could prevent the achievement of objectives are related to lack of a vision from senior management regarding financial return when investing in employee training. The goal was accomplished with the integration of two philosophies, TPTOC and lean. And only the tools proposed by Flavio Augusto Picchi were not enough for executing the action, so new lean actions were verbalized.