This study investigated the moderating effect of achievement striving (AS) on the relationship between situational variables, defined by the Job Demand–Control model (JDC), and both work–family conflict and work–family facilitation. In a sample of 224 employees in the welfare sector, the results of two hierarchical regression analyses showed that job demands were significantly positively related and job control was significantly negatively related to work–family conflict but not to work–family facilitation. For AS, a significant positive relationship was found with both work–family conflict and work–family facilitation. Interactions between situational variables and AS were insignificant although the interaction between AS and job control on work–family facilitation was close to significance in line with the expectations. Specifically, a lower level of job control did not lower the level of WFF experienced by individuals high on AS. Theoretical and practical implications are discussed.