The present study proposes an integrative behavioral-financial model of employee withdrawal combined with mathematical formulas, allowing the estimation of the overall cost of withdrawal to the firm. In contrast to previous attempts to calculate such a cost, we aimed to cover an entire range of withdrawal attitudes and behaviors, including psychological withdrawal, withholding effort at work, lateness, absence, and turnover. Cost calculation involves direct and indirect components, including those that were traditionally considered non-economic. The equations are based on theoretical grounds of the behavioral literature, including norm determination, mutual interpersonal influences within the work teams, and the possible progression of relatively mild withdrawal attitudes and behaviors into more severe forms. Empirical mean corrected correlations between withdrawal forms are used in the equations. We applied the model by assessing the withdrawal costs for the fiscal year 1997 in a leading, medium-sized, Israeli high-tech company. It was found that the withdrawal cost was approximately 2.8 million US dollars, or 16.5 per cent of the company’s before-tax income. Theoretical and applied implications of the results are discussed.