Australia does not have an official au pair program, however the Working Holiday Program and the new Work and Holiday visa provides opportunities for people between 18 and 30 from some countries (see below) to holiday in Australia and to supplement their travel funds through incidental employment.
Working Holiday visa:
The Working Holiday Program provides opportunities for people between 18 and 30 to holiday in Australia and to supplement their travel funds through incidental employment of up to 12 months. You are allowed to do any kind of work of a temporary or casual nature, but work for more than six months with any one employer is not permitted.
Australia has reciprocal Working Holiday Maker arrangements in effect with Belgium, Canada, Republic of Cyprus, Denmark, Estonia, Finland, France, Germany, Republic of Ireland, Italy, Japan, the Republic of Korea, Malta, The Netherlands, Norway, Sweden, Taiwan, & the United Kingdom.
Nationals of New Zealand do not require a work permit for Australia
Student Visa Programs:
Specific to US and UK residents, there is a BUNAC
work/study program in Australia for US and UK students that would allow au pairs to stay for up to 4 months.
Students in qualifying programs may be granted permission to work up to 20 hours a week while their studies are in session and unlimited hours while school is not in session. Students can apply to be granted the right to work once in Australia.
Information for students
Conditions for working while studying