The idea of evidence-based practice is now very well-known in many areas of professional practice including medicine, policing, policy-making, and clinical/health psychology but not so much in work and organizational psychology. Evidence-based practice involves making decisions through a combination of critical thinking and the use of more evidence (or information) of more diverse types and from more sources. First, I will consider barriers to evidence-based practice from our clients, academic practices, evidence-based practice myths, market forces, and the training of work and organizational psychologists. Second, some of the ethical and professional reasons why we should be more evidence-based will be discussed. Third, I will suggest several ways in which work and organizational psychology can perhaps become more evidence-based. These suggestions including changing the way we train work and organizational psychologists, making ourselves quite distinct from other organizational consultants, increasing the level of qualification required to practice, and sticking to our ethical codes of practice.