Productivity assessment is a prerequisite for improving productivity. Productivity is generally defined as the ratio of units of outputs to units of inputs. Multiple factors should be measured if we what calculate the productivity of operation theatre depend on the performance of both operation theatre itself and the teamwork. Overall, the productivity measurement is an important means to an end. It provides valuable information on how an operation theatre is performing, where it would like to be, and how it can achieve its goals. Productivity measures are only useful if they reflect the goals and objectives of the operation theatre and used to bring about action and productivity improvements.