Mental health is major concern on a global scale, and for a significant portion of the worldwide population, it is intricately linked with their work. This presents a notable challenge within the workplace, resulting in considerable costs for employers and society at large. This feasibility study aimed to develop a protocol to investigate the effects of a gratitude intervention on the mental health among leaders within the Brazilian labor market. A four weeks online experimental program with a quantitative empirical design to induce gratitude and observe variation in levels of depression, anxiety and stress, as well as self-compassion, ruminative responses and perfectionist beliefs. In addiction it aspired to identify possible obstacles to fostering gratitude within a corporate environment. The program consists of different tasks, adopting self-report scales with descriptive statistics to illustrate the characteristics of the sample and the differences between the groups in the dependent variables. To test the feasibility, a sample of 134 leaders were divided in two balanced groups: experimental (intervention) and control group (on the waiting list). It was possible to observe significant results in reducing scores for mental health problems, with reduction in anxiety, stress, and depression scores, when compared to controls. Thus, the program could contribute to the field of corporate mental health research and the development of future gratitude interventions in Brazil and worldwide.