Sickness presenteeism, with its antecedents and effects, begins to draw researchers' attention, Johns (2010) suggesting that personality should be incorporated in a theory of presenteeism. The study explores the relationship between performance-based self-esteem, overcommitment and sickness presenteeism on a Romanian sample. 133 employees completed the work-related version of the PBS scale (Hallsten et al., 2005), a 6 item uni-dimensional scale of overcommitment (Wirtz et. al., 2008) and one item measure of sickness presenteeism (Aronsson, et. al., 2000). Results indicated that overcommitment predicted sickness presenteeism, but due to the small size sample, the generalization of results must be made with cautions. (C) 2013 The Authors. Published by Elsevier B.V.