Does the Affirmative Action program apply to immigrants?

i would like to emigrate to South Africa eventually. I am a white Australian and was just wondering if the policy would apply to me. i am hoping to get into the health care industry probably occupational therapy. i am concerned that i might not be able to get a job because of Afirmative Action. i have seen some jobs advertised on the internet, so i was hopeful that it may not apply to immigrants