Union secretary Tane Phillips said workers were relieved to have secured a fair deal and for the lockout to be over.
Members had "stood strong right through".
He said they had been overwhelmed by the support and donations from the Kawerau community and people all across New Zealand.
"I also want to thank the Council of Trade Unions for its support through this dispute, as well as the Swedish unions and the global union body IndustriALL for putting pressure on Essity's head office in Stockholm.
"This is a big improvement on the company's original offer, which would have seen our members' pay go backwards in real terms. We have achieved what we set out to, which was for our members' pay to keep up with inflation."
Workers were expected to return to work on Monday but not before they had a celebration for all the union members and supporters.
'We will then hold a karakia at the gates on Monday morning before heading back to work with our heads held high."
A New Zealand Council of Trade Unions media statement said it was pleased to see the end of the lockout and it was "a victory for working people".
"Today is a good day for working New Zealanders, and an example of what we can achieve when we stand together in union," NZCTU president Richard Wagstaff said in the statement.