A travel management programme allows an organisation to manage corporate travel expenditure, and through a well-formulated travel policy, to control its travel expenses. However, traveller non-compliance of the travel policy is an increasing area of concern with surveys conducted amongst travellers showing various reasons for non-compliance, both deliberate and unknowing. The purpose of this article is to look beyond the reasons and identify underlying factors that influence travel policy compliance. Two broad categories of factors that lead to non-compliance are distinguished: those related to the corporate travel policy as formulated and communicated by the organisation, referred to as corporate-related factors and including issues of corporate culture and business ethics; and those related to the person of the corporate traveller, referred to as personal-related factors and including issues of personal ethics. This paper makes a first attempt at identifying factors that have not previously been recognised in those industry or academic studies done on non-compliance or violation of the corporate travel policy.