AbstractObjectiveOlder workers are increasingly prevalent in health and human services, including the alcohol and other drug (AOD) sector. Their turnover intentions have important implications for service system stability and retention.MethodsDescriptive and regression analyses of survey data examined age‐related differences (<50, ≥50 years old) in non‐government workers’ demographic, health and professional profiles and predictors of turnover intention.ResultsOlder workers (≥50 years, n = 86) comprised one‐third of this workforce. Compared to younger workers (n = 164), they experienced greater discrimination but higher work‐life balance and work engagement. Turnover intention was predicted by job satisfaction, discrimination and work engagement.ConclusionOlder workers’ well‐being and workforce retention are essential for effective leadership, succession planning and service continuity. Their needs and retention motivations are identified. Age‐specific support mechanisms, proactive retention and anti‐discrimination strategies are identified priorities.