A group of 208 organisations, businesses and individuals have spent about $30,000 on advertisements opposing the Employment Relations Bill, placed in the six main daily newspapers.
The group, called One Voice, was brought together by Wellington public relations company JM Communications after some of its clients voiced concern about the bill.
A spokesman for Labour Minister Margaret Wilson said he suspected there was no such group, just a "piece of paper that is a further part of a whirlwind of misinformation."
But JM Communications director Catherine Judd said One Voice represented a range of organisations.
Work bill opponents launch media campaign
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