CASA and EASA
CASA is different from EASA, as EASA PART66 is European Countries issued licence. I never heard that EASA is coming to Australia(Different continent)
But I am sure if someone has EASA PART66 A/B1/B2 Licence, he will get exemption in Non-EASA countries.
These days it is difficult to get job in some decent Airline due to recession and job cut and less vacancies. In UK I have some aviator friends which are Jobless.