Marcin Wnuk is a psychologist. He is an adjunct in the Department Work and Organizational Psychology of Adam Mickiewicz University in Poznań. Author of more 100 scientific papers, he is interested in the following areas of research: Psychology of religion, industrial and organizational psychology, psychology of addictions, psychology of quality of life. In the discipline of organizational psychology, he is author of measuresincluding Gratitude toward the Organization, Employee Spirituality Scale, and Haughtiness-Humility Scale in Business. Additionally, he is a business consultant specializing in diagnosis and interventions in organizations.