Flyby1206 is correct. I know of NO airline that forces you to relocate. I have friends that fly for Mesa, XJT, CHQ, AE, ASA, and many majors; none of which force there pilots to relocate.

You might mean a force domicile change, which is when a domicile is closed or downsized. Then the pilots and FA's will be forced to change domiciles but still not forced to relocate.