There is a large and growing body of scientific evidence that return to work usually provides significant overall health benefit, and staying off work needlessly results in poorer overall health outcomes. Thus, employers, employees (patients), and insurers all benefit from individuals returning to work in usual time periods. Disability duration guidelines can be an important tool helping the injured workers to get back on the job. The return to work process needs to be accepted by all parties (physicians, employees, employers, insurers) as defensible, fair and evidence-based. "The medical disability advisor - Workplace Guidelines for Disability Duration" by Presley Reed is the backbone of communication, understanding and measurement in case management programs, having great impact on many parties and steps during a case life cycle.