We consider the problem of quoting customer lead times in a manufactur
ing environment under a variety of modeling assumptions. First, we exa
mine the case where capacity is infinite. For this case, we derive a c
losed-form expression for the optimal lead time quote. Second, we cons
ider the case where capacity is finite and the firm processes jobs in
first-come-first-served (FCFS) order. We prove the optimality of diffe
rent forms of control limit policies for the situations where the lead
time is dictated by the market and where firms are able to compete on
the basis of lead time. Finally, we consider the case where the firm
may choose to schedule jobs in other than FCFS order and give conditio
ns under which the optimal due-date-quoting/order-scheduling policy wi
ll process jobs in earliest due date (EDD) order.