The purpose of this study was to investigate the relationship between psychological/physical well-being and counterproductive work behaviors. More specifically, we proposed and tested a model of mental and physical wellbeing, conceptualized as an forerunner (Kahn & Byosiere, 1992) associated with a range of behavioral outcomes including Counterproductive Work Behaviors (Fox, Spector & Miles, 2001), with two dimensions: organizational counterproductive behaviour (CWB-O) and interpersonal counterproductive behavior (CWB-I). We further proposed that the relationship between wellbeing and behavioral outcomes would be mediated by organizational commitment. Data were collected from a sample of 118 participants, using Pressure Management Indicator (Williams & Cooper, 1998, romanian version Brate, 2004) and The Counterproductive Work Behavior Questionnaire (Spector & Fox, 2001). The results have revealed that indicators of wellbeing at work affects/predicts dimensions of deviant behavior directly, also the role of organizational commitment is discussed in the wellbeing - counterproductive work behavior interaction.