(ABC News) -- The Federal Government's bid to set up national laws for workplace safety is in doubt, with Western Australia saying it is unlikely to agree.

A draft version of the new national occupational health and safety laws is expected to be released today.

Deputy Prime Minister Julia Gillard is meeting state and territory ministers, including a concerned Troy Buswell from Western Australia.

He is refusing to sign up to the laws because he thinks they give unions too much power.

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