This paper compares Foreign Direct Investments and Licensing by using
an incomplete contract approach. The difference of the ownership (FDI
or Licensing) generates the difference of control right of a plant. If
contracts are incomplete, this difference of control right is importa
nt and the difference affects the incentive of specific investment. Th
is paper shows that if the investment of the host firm is very specifi
c, the Foreign Direct Investment is chosen, but if the investment is n
ot so specific, the Licensing is chosen. This paper also points out th
at the choice of the ownership is closely related to the degree of fac
tor mobility in the host firm; the degree of factor mobility affects t
he ownership structure and vice versa.