Abstract
This chapter will delve into various co-morbidities or pre-existing health/medical conditions that may negatively impact injured workers’ abilities to gain appropriate rehabilitative milestones. It is surprising to see that they so often go ignored in spite of the dramatic impact they have. This chapter also looks at various ironies and then offers Bennington’s (2010) wise ideas for ways to manage these problems. The chapter concludes with a description of a unique work hardening and conditioning program that has demonstrated efficacy.