Purpose: The concept of Decent Work was created by the International Labor Organization and ratified by the United Nations in the 2030 Agenda by providing attributes for work, making it universally accepted and desirable. In the same sense, having a life coated with psychological and subjective well-being, in a stable and perennial way, meets the human quest for happiness. Understanding how workers perceive Decent Work and Happiness at Work is the aim of this study. Method/approach: Previously applied the Decent Work Questionnaire and the Happiness at Work Inventory were applied to a sample of 387 workers from a Brazilian public organization, subdivided into statutory and outsourced workers. In this qualitative stage, 20 semistructured interviews were carried out with the respondent workers who volunteered for this final phase of the research. Main findings: Among the three dimensions of Happiness at Work, the most important for the workers was once again the Psychosocial, through respect, welcome and organizational support. Statutory employees highlighted that telecommuting brought greater flexibility and opportunities for development (Transcendental). Outsourced workers highlighted the expectation of retirement and protection in case of illness (Existence Material). Theoretical, practical/social contributions: The study validates the dimensions of both psychological constructs as organizational indicators of quality of life at work. Originality/relevance: Decent Work is related to positive organizational behaviors, such as engagement, autonomy, motivation, among others. However, this is the first study that relates Decent Work to Happiness at Work, a key concept for the Positive Psychology movement.