Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
occupation [ɔkjuˈpeɪʃən] n заня́тие; (occupancy) пребыва́ние; (MIL) оккупа́ция
unfit for occupation (house) неприго́дный*неприго́ден для жилья́
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.