Abstract: Occupational Health physicians coexist in a work environment where they perform activities other than the ones developed by other doctors. Hence, there is interest in analyzing the theoretical construction of their job satisfaction. Inductive and qualitative study was conducted based on grounded theory and with the support of the software Atlas-ti. As a result of carrying out in-depth interviews and through the open, axial and selective coding process, 12 categories and five dimensions were integrated. They shaped the final definition of job satisfaction of these professionals. The conclusions showed that they are currently satisfied, although they were not satisfied at the beginning of their work life.Keywords: Theoretical Construction, Occupational Health Physicians, Grounded Theory, Job SatisfactionIntroductionThe International Labor Organization (ILO) and the World Health Organization (WHO) established in 1950 and updated in 1995, that the purpose of the work of professionals engaged in occupational health in enterprises is to adapt work to man and each man to his activity (ILO, 1998; 1985).ILO specifies in its Convention 161, Chapter II that the work of these professionals should, among others, aim to: Uncover the factors in work environments and work practices that may affect the health of workers; participation in the development of programs to improve work practices and to monitore the work-related health of employees.This means that the job of these doctors requires a wide range of knowledge and skills, many of which were not learned during their medical training therefore they should receive specialized training. Moreover, although they are part of the medical profession, they differ because they do not work in a hospital along with. That is why it is considered a unique and complex group and therefore, the interest to explore and analyze the theoretical construction that they drew on their job satisfaction.In terms of job satisfaction, it is defined as a worker's attitude towards their job in terms of the perception of it (Cuadra and Veloso, 2007).GALLUP (2013) reports that in Mexico only 12% of workers are fully satisfied and engaged to their jobs; and that 28% of them definitely dislike their work.Job satisfaction, referenced in a review of surveys for quality of work life (2006-2010), performed annually in Spain, Rico (2012), found that it was higher in women and it was increased by: Job stability; employee's involvement in the company, a good business climate and the balance between work and family life.Qualitative studies on job satisfaction that consider the emic posture, that is the point of view of the actors, also show indicators, but they have different kind of proposals. For example, the study on a French company dedicated to wine and liquors, found that workers at the lower hierarchical level are the ones who perceived the most dissatisfaction because of inadequate salaries; the middle level workers searched mainly their professional development and the intention of a promotion to a higher executive level; and the highest level functionaries considered the non financial satisfactors and their status more important (Galanou et al., 2011).Another qualitative research applied to health personnel in nursing (Cousins and O'Donnell, 2011), concluded that having a greater professional responsibility, such as the power to prescribe drugs, increases the level of stress but also increases the job satisfaction, for being able to work with autonomy and independence. Both, nurses from Alberta, Canada as well as the Spanish building workers, consider their job fun (Reutter and Ford, 1996), because they have wide a variety of tasks and they feel valued, although the latter recognized that their work load is heavy and sometimes highly dangerous (Navarro-Astor et al., 2012).In this study, we applied Grounded Theory that is meant to build theory rather than test theory. …