Social Exchange and Common Agency in Organizations

We study the relation between formal incentives and social exchange in organizations where employees work for several managers and reciprocate to a manager's attention with higher effort. To this end, we develop a common agency model with two-sided moral hazard. We show that when effort is contractible and attention is not, the first-best can be achieved through bonus pay for both managers and employees. When neither effort nor attention are contractible, an `attention race' arises, as each manager tries to sway the employee's effort his way. While this may result in too much social exchange, the attention race may also be a blessing because it alleviates managers' moral-hazard problem inattention provision. Lastly, we derive the implications of these contract imperfections for the optimal number of managers that share one employee.