This chapter discusses the issues of risk assessment, management, communication, and abatement that are important to the Toxicologic Pathologist to understand the significance of their contribution as it relates to the health of humans and the environment following exposure to products in development for use as pharmaceutical of chemical compounds. The division of the development stages is discussed along with the most important practices to make the contributions of the Toxicologic Pathologist useful to the client, ethically rigorous, and responsive to the needs of the public.