Fair pay negotiations could end up being a long, drawn out process.

Unions say they already have enough signatures to demand a Fair Pay Agreement for hospitality workers.

It means any negotiated pay and working conditions will apply to all employers in the industry.

But Employers and Manufacturers' Association Head of Advocacy Alan McDonald told Mike Hosking there are some very complex things around this.

He says there are all sorts of technical arguments around wage bargaining that need to be very precise.

McDonald suggests the way the legislation is written, things are very imprecise.

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