With this final paper, it was intention to point out an effective way of improving the entire business of the company by introducing the 20 keys method, especially on improving development of human resources and employment in the manufacturing and non-manufacturing departments of the observed company Velinac d.o.o. from Zagreb. The 20 keys method was designed nearly 40 years ago in Japan and has so far been introduced in a large number of companies and corporations around the world. The 20 keys method is verified, comprehensive, practical, with the goal of incorporating and motivating all employees in the company. This paper goes through all 20 keys in its theoretical part, and implementation success is checked through a survey conducted on employees of the manufacturing and non-manufacturing departments. The aim of the paper was to determine whether employees considered that their position improved after the introduction of the 20 keys model, or whether it has been changed compared to the position before introduction. From the conclusion it is obvious that the implementation of the 20 keys method in the observed company was successful which is supported by more satisfied and motivated employees. Ultimately, it can be concluded that investing in company´s development through the 20 keys method is profitable, and the observed company needs to further develop itself and work on the automatization of production.