Unfortunately, problems associated with sleep are a common issue among individuals in the general population, with even higher rates reported among those diagnosed with a mental illness and/or chemical health disorder. As such, it is imperative for these impacted individuals to receive appropriate supports and services from mental health and substance use treatment professionals who understand the complexities of sleep dysfunction. Designed for professionals working in mental health and substance abuse treatment settings, this training provides attendees with a working understanding of the causes, consequences, and interventions associated with sleep disturbances and disorders among client-based populations. Special emphasis is placed on implications for screening, intake, and treatment and discharge planning throughout this training. Empirically based research findings and case study examples will be highlighted throughout this training.