In this study we investigate the effect of the introduction of premium differentiation (experience rating) in the Dutch Unemployment Insurance system on the demand for labor. We formulate a model of labor demand, based on the model by Bentolila and Bertola (1990), in which we distinguish two types ofworkers: the "young" and the "old". This distinction is made, as one of the major motives for opening the discussion around premium differentiation inthe Netherlands is the wish to reduce the inflow of older workers into unemployment. In the model, labor adjustment costs (hiring and firing costs) arelinear. The model allows for uncertainty in the business cycle. Premium differentiation is incorporated in the model as a rise in firing costs,accompanied by a decrease in unemployment insurance premium payments. Values for the model parameters are determined to quantify the effect of premiumdifferentiation on the demand for labor in various sectors of the Dutch economy. We compute the effect of premium differentiation on the steady statelevel of labor demand. We also compute the effect of premium differentiation on the level of profits.