Chris Hemsworth: Showbiz ... It's All Who You Know

Chris Hemsworth takes care of his own on set ... even the in-laws.

The actor hooked up Cristian Prieto -- the little bro of his wife Elsa Pataky -- with a production gig for his new 'Thor' movie -- which is in the middle of filming in Brisbane, Australia.

We're sure Chris helping out Cristian sat well with the missus.