Hyperfine fields at Fe and Mo layers in polymide/Fe(10 nm)/[Mo(1.1 nm)/Fe(2.0 nm)](120) and [Mo(1.3 nm)/Fe(2.0 nm)](120) multilayers prepared by the electron-beam evaporation technique were measured at room-temperature by Mossbauer spectroscopy and perturbed-angular-correlation spectroscopy. The hyperfine fields in the Fe layers do not show a clear dependence on the Mo layer thickness. On the other hand, the hyperfine fields in the Mo layers show different magnetic structure in these samples. The difference suggest a variation of electron spin polarization in the Mo layers.