In this research, we have investigated the role of establishing a suggestion system in motivating employees in Bank Melli of Iran (Case study: Branches in the western regions of Tehran). The method of this research is descriptive-survey; we have used library studies and questionnaire to collect information. The statistical population of the present research is the branches of the western regions of Tehran province. Using the method of "simple random sampling", we distributed 200 questionnaires among the branches of the western regions of Tehran, of which only 175 questionnaires were returned and 5 samples were discarded due to their deficiencies. We entered information of the remaining 170 questionnaires into SPSS for data analysis. According to the results of the present research, we conclude that there is a significant relationship between the establishment of the suggestion system and employee motivation in particular and a significant relationship between the establishment of the suggestion system and career advancement, tendency to creativity, working team, and employees' foresight in general. The correlation is direct and positive; to prove this, we used Spearman correlation coefficient. To rank the components of motivation, we used Freedman nonparametric test. It showed that employees' foresight comes first in importance and attention. The researcher has suggested that managers in Bank Melli of Iran change the nature of employees' jobs to motivate them. That is, they can increase the scope of responsibilities and the level of authority of employees, anticipate and implement appropriate training courses to enhance their knowledge and awareness and give employees the opportunity to improve skills for increasing employee motivation to work. Managers can also increase employee motivation and increase their participation in generating new ideas and suggestions by defining tasks in a way that inspires a kind of independence to employees. In return, spiritual and material rewards provide employees with greater loyalty and commitment to the bank.
