In regards to the Industrial Workers of the World the Socialist Party of Great Britain has revised its attitudes as a result of changes within the IWW. The official position is that as long as the IWW behaves and acts as a workers union then its up to individual SPGB members to decide whether or not it is in their interests to join.
Previously, during the formative years of both organisations, the IWW was seen as more of an anti-political i.e. an anarchist organisation, promoting industrial unionism, which the SPGB disavowed as sectional and undemocratic, since it was about industries controlling the means of production and distribution and not society as a whole, those outside the work-place. But the SPGB now accepts that in recent years the IWW can be more accurately described as an a-political organisation, a difference of emphasis, since it itself has changed its approach to the class struggle and for all practical purposes now acts as a democratic and progressive, inspirational and educational union that is to be recommended for membership when it is to the workers advantage, which is the majority of the time and situations. No longer being divisive with outright opposition to the pure and simple reformist trade unions by its adoption of the dual -card policy has been another change which differentiates the present from the early IWW that the SPGB criticised. It has also accepted the principles of agreed contracts of employment and even state recognition and registration. For all practical purposes it now operates as a union and an umbrella for workers of many political persuasions and not just the one. So it is not a formal position to the IWW that has been taken by the SPGB but an informal one (and a practical one), which can change if the IWW decide that certain ideas should take precedence over others or again become dominated by one particular strand of political thought, rather than an open and inclusive workers' organisation which exists now. We also have to be minded that even within syndicalist unions the more effective the union is in achieving victories against capitalism , the more the non-radical workers will join it for the trade union benefits and this could just as like water down its revolutionary aspects as to militantise those new recruits. It is just as likely that they will desert the union if the revolutionary aspirations of the union hinder the practicalities of the daily bread and butter fight .