Efficiency Improvement through Lean Office Implementation

Introduction
The business world has been changed by globalization as well as the meaning of value of a product to customers. Thus, companies have been operating in volatile and highly complex environments. The expectations of customers allied to increased competition require companies to know how to gain competitive advantage. There are different approaches to guide business in this new direction, such as the lean production system . It has been a while since lean principles were recognized as a way to gain competitive advantage. Therefore, in order to improve operational performance, lean practices have been ever more implemented by companies. Lean production brought a reflection about manufacturing and service operations not only of the repetitive production environment, and also changed the trade-off between quality and productivity. It can be said that, in this way, it has satisfactorily challenged the practices of mass production . Lean manufacturing is a set of techniques that can reduce and eliminate wastes, making the companies more flexible and responsive. With lean philosophy, in the end, the processes can run using fewer materials, people and inventory, requiring less investment, and consuming less space. The lean manufacturing's techniques, tools and principles can be applied in various industry segments, enabling waste elimination in order to achieve operational excellence. Originally, its principles were applied only on manufacturing sectors, because it was developed in this area. Subsequently, its application was spread to other productive areas, where there exists a scope for process improvement . There has been an increase in the number of manufacturers who recognize that to have a true Lean transformation its principles must be applied to all company operations, not being restricted to the shop floor . Therefore, it has become more frequent use lean in other areas, for example in administrative environments. It is called Lean Office the implementation of lean manufacturing philosophy in offices and administrative processes. Lean Office helps to streamline information flow in any administrative function, focusing on reducing the total cycle time . Companies can only experience the process improvements and benefits of lean manufacturing principles if its implementation is successful. Thus, the objectives of this research carried out through a systematic literature review was to identify the main difficulties in the Lean Office implementations, propose a classification system and sort the collected literature. This study is important for better knowledge of the literature – because there is very limited literature that discusses the Lean Office to present a profile of the application of Lean office, and to suggest researches to find methodologies and solutions for making successful implementations.
A successful case of lean office implementation in the Electrical accessories manufacturing office area is present