Labour's work and wages policy would take New Zealand back to the strike-ridden days of the 1970s and make industries less competitive, the business sector says.
BusinessNZ chief executive Phil O'Reilly says it would be bad for everyone - employees, employers and communities.
Labour released its policy on Tuesday, promising to repeal the 90-day probation law, raise the minimum wage to $15 an hour and allow industry-wide agreements to be negotiated.
Mr O'Reilly says it would mean central bargaining agents setting pay rates for entire industries.
"That's not much different from national awards which in the 1970s and 1980s were responsible for the highest number of strikes ever recorded in New Zealand," he says.
"A minimum wage that would make it harder for employers to offer jobs and repealing the sensible and popular 90-day trial policy are inconsistent with the modern workplace."
The ACT Party says Labour's policy would cost jobs and hurt the people it claimed to be trying to help.
"Labour just doesn't get it - the more something costs, the less people buy," says leader Don Brash.
"Creating more restrictions to employment laws and raising the minimum wage will see employers hire fewer staff."
NZN