RNZ reports the region's trade ministers are preparing to meet in Christchurch this Friday to further discuss the agreement.
Negotiations started in 2009 and are on track to wrap up later this year.
A report from the Pacific Network on Globalisation has warned that PACER-Plus poses significant threats to island nations' governments.
It said this included threats to their right to regulate, the right to food, significant negative health impacts and disproportionate impacts on women.
