There is a long-standing debate over whether evaluation is an art or a science (Barker et al.: Research Methods in Clinical and Counselling Psychology, Chichester, John Wiley & Sons, 1994). The ''science'' camp argues for scientific rigour in methodology, whilst the ''art'' camp maintains that evaluation should be tailored to the specific circumstances under evaluation. The compromise proposed by Barker, Pistrang, & Elliot (1994) suggests that evaluation should be as systematic as possible within the practical and organizational constraints inherent in service settings. The aim of this paper is to present a review of the literature on evaluation and workplace counselling. The paper initially reviews the literature in the counselling/psychotherapy field, and then explores studies on employee assistance programmes. The themes that are explored are the relationship between research and practices; the interactions with stakeholders in the field; the use of control groups and the economic side of counselling.