All potential migrants to Australia under the Skilled Migration route, or temporary migrants on a working holiday, must have their character assessed as part of the visa grant process. Applicants must declare it if they have a criminal record, however minor and regardless of how long ago they incurred it.
The onus is on the applicant to prove they are of good character, an applicant can fail the test if:
they have a substantial criminal record;
they have, or have had, an association with an individual, group or organisation suspected of having been, or being, involved in criminal conduct;
having regard to the person's past and present criminal conduct, the person is found not to be of good character, and;
having regard to the person's past and present general conduct, the person is found to be not of good character;
there is a significant risk that the person will engage in criminal conduct in Australia, harass, molest, intimidate or stalk another person in Australia, vilify a segment of the Australian community, or incite discord in the Australian community or in a segment of that community, or represent a danger to the Australian community or a segment of that community.
Character Requirements: Australian Visa Bureau