As most New Zealanders enjoy the Labour Day public holiday, unions are warning many workers' entitlements are under threat.
The Council of Trade Unions and First Union say that despite gains made since the first Labour Day, celebrated in 1890 and made a public holiday in 1900, the Government is trying to reduce the youth wage - to a minimum of $10.80 - and weaken the power of collective bargaining, generally carried out by unions on behalf of workers.
In 1890 several thousand trade union members and supporters attended parades in the main centres.
"Many gains have been made by workers since those early days," said CTU secretary Peter Conway.
"However, with 162,000 people unemployed, 110,000 seeking additional hours of work, and major attacks under way or in the pipeline on pay and conditions of work, there are many challenges that remain."
Mr Conway told NZ Newswire people were increasingly working on Labour Day but he was unaware of any moves to erode the day's status as a public holiday.
First union general secretary Robert Reid said the Government is expected to introduce legislation before Christmas that would weaken collective bargaining.
It's expected to include the removal of an obligation to complete negotiations and the provision of new workers to benefit from union-negotiated conditions for the first 30 days while they consider joining the union.
Mr Conway and Mr Reid said collective bargaining was an important tool in improving wages and working conditions.
"Unions are part of the solution to low pay and achieving a living wage, and any government genuinely committed to closing the wage gap with Australia would recognise this," Mr Reid said.
The Ministry of Business, Innovation and Employment says more than 2600 collective contracts account for around 15 percent of the total employed labour force.
NZN