Australia encountered the IWW tradition early.
In part this was due to the local De Leonist Socialist Labor Party following the industrial turn of the US SLP.
The SLP formed an IWW Club in Sydney in October 1907.
Members of other socialist groups also joined it, and the special relationship with the SLP soon proved to be a problem.
The 1908 split between the Chicago and Detroit factions in the United States was echoed by internal unrest in the Australian IWW from late 1908, resulting in the formation of a pro-Chicago local in Adelaide in May 1911 and another in Sydney six months later.
By mid-1913 the "Chicago" IWW was flourishing and the SLP-associated pro-Detroit IWW Club in decline.
In 1916 the "Detroit" IWW in Australia followed the lead of the US body and renamed itself the Workers' International Industrial Union.

The early Australian IWW used a number of tactics from the US, including free speech fights.
However, there early appeared significant differences of practice between the Australian IWW and its US parent; the Australian IWW tended to co-operate where possible with existing unions rather than forming its own, and in contrast with the US body took an extremely open and forthright stand against involvement in World War One.
The IWW cooperated with many other unions, encouraging industrial unionism and militancy.
In particular, the IWW's strategies had a large effect on the Australasian Meat Industry Employees Union.
The AMIEU established closed shops and workers councils and effectively regulated management behaviour toward the end of the 1910s.

The IWW was well known for opposing the First World War from 1914 onwards, and in many ways was at the front of the anti-conscription fight.
A narrow majority of Australians voted against conscription in a very bitter hard-fought referendum in October 1916, and then again in December 1917, Australia being the only belligerent in World War One without conscription.
In very significant part this was due to the agitation of the IWW, a group which probably never had as many as 500 members in Australia at its peak.
The IWW founded the Anti-Conscription League (ACL) in which members worked with the broader labour and peace movement, and also carried on an aggressive propaganda campaign in its own name; leading to the imprisonment of Tom Barker (1887–1970) the editor of the IWW paper Direct Action, sentenced to twelve months in March 1916.
A series of arson attacks on commercial properties in Sydney was widely attributed to the IWW campaign to have Tom Barker released.
He was indeed released in August 1916, but twelve mostly prominent IWW activists, the so-called Sydney Twelve were arrested in NSW in September 1916 for arson and other offences. (
Their trial and eventual imprisonment would become a cause célèbre of the Australian labour movement on the basis that there was no convincing evidence that any of them had been involved in the arson attacks.)
A number of other scandals were associated with the IWW, a five-pound note forgery scandal, the so-called Tottenham tragedy in which the murder of a police officer was blamed on the IWW, and above all it was blamed for the defeat of the October 1916 conscription referendum.
In December 1916 the Commonwealth government led by Labour Party renegade Billy Hughes declared the IWW an illegal organization under the Unlawful Associations Act.
Eighty six members immediately defied the law and were sentenced to six months imprisonment.
 Direct Action was suppressed, its circulation was at its peak of something over 12,000.
During the war over 100 members Australia-wide were sentenced to imprisonment on political charges, including the veteran activist Monty Miller.

The IWW continued illegally operating with the aim of freeing its class war prisoners and briefly fused with two other radical tendencies – from the old Socialist parties and Trades Halls – to form a larval communist party at the suggestion of the militant revolutionist and Council Communist Adela Pankhurst.
The IWW, however, left the CPA shortly after its formation.

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Australia encountered the IWW tradition early. In part this was due to the local De Leonist Socialist Labor Party following the industrial turn of the US SLP. The SLP formed an IWW Club in Sydney in October 1907. Members of other socialist groups also joined it, and the special relationship with the SLP soon proved to be a problem. The 1908 split between the Chicago and Detroit factions in the United States was echoed by internal unrest in the Australian IWW from late 1908, resulting in the formation of a pro-Chicago local in Adelaide in May 1911 and another in Sydney six months later. By mid-1913 the "Chicago" IWW was flourishing and the SLP-associated pro-Detroit IWW Club in decline. In 1916 the "Detroit" IWW in Australia followed the lead of the US body and renamed itself the Workers' International Industrial Union.
The early Australian IWW used a number of tactics from the US, including free speech fights. However, there early appeared significant differences of practice between the Australian IWW and its US parent; the Australian IWW tended to co-operate where possible with existing unions rather than forming its own, and in contrast with the US body took an extremely open and forthright stand against involvement in World War One. The IWW cooperated with many other unions, encouraging industrial unionism and militancy. In particular, the IWW's strategies had a large effect on the Australasian Meat Industry Employees Union. The AMIEU established closed shops and workers councils and effectively regulated management behaviour toward the end of the 1910s.
The IWW was well known for opposing the First World War from 1914 onwards, and in many ways was at the front of the anti-conscription fight. A narrow majority of Australians voted against conscription in a very bitter hard-fought referendum in October 1916, and then again in December 1917, Australia being the only belligerent in World War One without conscription. In very significant part this was due to the agitation of the IWW, a group which probably never had as many as 500 members in Australia at its peak. The IWW founded the Anti-Conscription League (ACL) in which members worked with the broader labour and peace movement, and also carried on an aggressive propaganda campaign in its own name; leading to the imprisonment of Tom Barker (1887–1970) the editor of the IWW paper Direct Action, sentenced to twelve months in March 1916. A series of arson attacks on commercial properties in Sydney was widely attributed to the IWW campaign to have Tom Barker released. He was indeed released in August 1916, but twelve mostly prominent IWW activists, the so-called Sydney Twelve were arrested in NSW in September 1916 for arson and other offences. (Their trial and eventual imprisonment would become a cause célèbre of the Australian labour movement on the basis that there was no convincing evidence that any of them had been involved in the arson attacks.) A number of other scandals were associated with the IWW, a five-pound note forgery scandal, the so-called Tottenham tragedy in which the murder of a police officer was blamed on the IWW, and above all it was blamed for the defeat of the October 1916 conscription referendum. In December 1916 the Commonwealth government led by Labour Party renegade Billy Hughes declared the IWW an illegal organization under the Unlawful Associations Act. Eighty six members immediately defied the law and were sentenced to six months imprisonment.  Direct Action was suppressed, its circulation was at its peak of something over 12,000. During the war over 100 members Australia-wide were sentenced to imprisonment on political charges, including the veteran activist Monty Miller.
The IWW continued illegally operating with the aim of freeing its class war prisoners and briefly fused with two other radical tendencies – from the old Socialist parties and Trades Halls – to form a larval communist party at the suggestion of the militant revolutionist and Council Communist Adela Pankhurst. The IWW, however, left the CPA shortly after its formation.
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Industrial Workers of the World