According to the World Health Organization (WHO, 2004), mental health is defined as "state of mental well-being that enables people to cope with the stresses of life, realize their abilities, learn well and work well, and contribute to their community." and as "a state of complete physical, mental and social well-being, not just the absence of illness and infirmity". Since no mental health research on speech and language pathologists (SLPs) has been conducted in Croatia so far, the main goal of this research was to determine the level of positive mental health with regard to the years of service of SLPs and the system in which they are employed. 217 participants participated in the research by completing an online questionnaire. The collected data was analyzed in SPSS, using descriptive and non-parametric statistics. There was no statistically significant difference in the level of positive mental health of SLPs with regard to length of service, while a statistically significant difference in the level of positive mental health of SLPs was determined with regard to the employment system. The highest level of positive mental health was observed in SLPs who are employed in the private system, and the lowest level of mental health was observed in SLPs from the social and health system. The results obtained from this research indicate the need for further research on this topic within the speech and language pathology profession.