Glencore Xstrata is running the risk of conflict with unions in the Queensland coal sector, following the Swiss conglomerate's decision to alter a workplace deal for its Collinsville mine.

The resource giant decided to alter its workplace arrangements at the Queensland coal mine following its axing of Thiess as mining contractor and the conversion of the mine to in-house operation, in order to help restore the project to profitability. Glencore Xstrata has since stated that it would continue to…