The Government says it will block an attempt by National to allow both parents to take paid parental leave at the same time.
A bill that extends paid parental leave from the current 18 weeks to 22 weeks from July next year and to 26 weeks by July 2020 is in Parliament, due for its committee stage later today.
National is going to put up an amendment that would allow both parents to take paid parental leave at the same time, which the legislation doesn't allow.
It says the simple change would give parents a choice, but Acting Prime Minister Kelvin Davis says the Government is satisfied with the bill the way it is.
Opposition Workplace Relations spokeswoman Amy Adams says Labour is going back to its "nanny state" ways of telling people how to live their lives.