This paper reports a case study of a workplace health programme in an international information technology company. Discourse analysis was used to identify how specific forms of knowledge create understandings of health and influence power relations between employee and organization. These forms of knowledge are shown to make employee health both visible and invisible in particular ways. Workplace health discourse encourages the employee to take responsibility for self-assessment and behaviour adjustment to become healthier employees. This is shown to be an ethical project which results in the alignment of personal and corporate goals.