In recent years, there has been a large increase in the number of families with two „breadwinners“, single parents, and households that include other engagements, such as living together with older family members (Bennett et al., 2017). Changes in the workplace, as well as increasing demands outside the workplace, lead to an increasing spread of conflict between family and work roles. The work-family relationship is dynamic and reciprocal (Huang et al., 2004), and the conflict between family and work roles is often highlighted as one of the main stressors in the workplace, which then leads to various negative outcomes, such as impaired well-being (Keratepe and Tekinkus, 2006). The aim of this research was to determine the differences in the conflict between family and work roles in different age groups, differences in coping strategies on different age groups and the connection between the conflict between family and work roles with regard to the dominant style of coping with stress. The research used a sociodemographic data questionnaire, the Endler and Parker Coping with Stressful Situations Questionnaire (CISS) and the Work-Family Conflict Scale (Netemeyer et al., 1996). 334 subjects between the ages of 19 and 63 took part in the research. According to Matthews et al. (2010) study, the participants were divided into 3 groups based on their age, namely early adulthood (18 to 28 years), middle adulthood (29 to 44 years) and older adulthood (45 and older). The research did not establish a difference in the 'family-work' conflict or the 'workfamily' conflict between different age groups (early, middle, and older adulthood). However, a significant difference was found in the way of coping with stress, with avoidance coping being more common in the youngest group of respondents, while no difference was found for emotion-focused coping and problem-focused coping. Also, the connection between the way of coping with stress and the "family-work" conflict or the "work-family" conflict was established.