Firms often view job applicant referrals from current employees as more informative than direct applications or referrals through formal labor market intermediaries such as placement firms. The authors argue that old boy networks reduce employers' uncertainty about worker productivity. Using Jovanovic's job matching model, they show that workers hired through the old boy network should (1) earn higher initial salaries, (2) experience lower subsequent wage growth on the job, and (3) stay on the job longer than otherwise comparable workers hired from outside the network. They find considerable support for this theory using data from the 1972 Survey of Natural and Social Scientists and Engineers.

This article investigates whether prenotification decreases postdisplacement joblessness. Reduced-form estimates indicate that lengthy written notice is associated with small increases in the probability of avoiding nonemployment but with no decline in average durations. Significant reductions are found, however, for household heads, women, nonwhites, and in local labor markets with high unemployment rates. A new method is developed to control for the endogeneity of voluntarily provided advance notice. This procedure suggests that previous research substantially overstates the degree to which prenotification reduces nonemployment and indicates that the actual decrease is between 2 and 5 working days.