Organizational climate is an important organizational concept which affects organizational and psychological processes such as communication, problem solving, decision-making, conflict resolution, learning, motivation, job satisfaction, well-being, and thus has an important impact on the efficiency, productivity of the organization and on innovation. It can have an effect on the behavior and emotions of employees, which are expressed through positive or negative mental health. A positive and effective organizational climate is characterized by a pleasant working environment, trust, responsibility, transparency, learning, and recognition. An increasing number of organizations implement programs to promote and protect the mental health of employees because they understand that satisfied, happy and motivated employees are a key and irreplaceable resource of the organization. The main goal of this thesis is to investigate the relationship between organizational climate and mental health based on domestic and foreign literature and empirical research conducted on a convenient sample of 123 respondents through an online survey. According to the findings of the study, the organizational climate and employee mental health are adversely associated, which means that diminishing perceived organizational environment aspects leads to a rise in emotions of anxiety and depression.