Union membership and work stoppages due to strikes – two indicators of union power and influence – have been in decline in Australia, New Zealand and the United States in recent decades. Meanwhile, attitudes to unions in Australia seem to have become more positive. This article examines the contribution of legislated neo-liberal workplace reforms to the decline in union membership and work stoppages in the three countries. Evidence indicates that union membership and stoppages would have declined in the absence of the workplace reforms, though it is likely that the declines would not have been quite as rapid as they turned out to be. The emergence of more positive attitudes in Australia to unions is attributed to declining union power reflected in falling membership rates and a relative absence of disruptive union behaviour.