While at university, she became involved with the leadership of the Adelaide University Labor Club in 1988, and has been a delegate to the South Australian Labor Party State Convention every year since 1989, (with the exception of 1995). She also worked part-time for the Construction, Forestry, Mining and Energy Union (CFMEU), and won a position on the National Executive of the National Union of Students. A number of her contemporaries at university went on to become Australian politicians. Former senator for South Australia, Natasha Stott Despoja, was a contemporary, along with current Premier of South Australia Jay Weatherill (with whom she had a relationship) and Mark Butler, Labor MP for Port Adelaide. Wong graduated from the University of South Australia in 1992, and continued her association with the CFMEU as an industrial officer. She was admitted to the South Australian Bar in 1993.