Cement maker Holcim New Zealand has revealed a company shake-up that will result in four management jobs in Christchurch being axed in the next few months.
The revamp will result in a smaller business in New Zealand by 2016.
The wind-down of the Westport cement manufacturing plant in mid to late 2016 has been confirmed and the loss of about 120 jobs.
The company is also looking at selling part or all of its lime business.
Holcim NZ managing director Jeremy Smith is being made redundant with Holcim announcing it will combine its New Zealand and Australian operations.
Another three management jobs will also be axed, but the head office in Christchurch will remain open.
"Other than the four senior roles announced today as being dis-established in 2015, no other changes are planned in the near future," Smith said.
Asked about the affect on other staff numbers once all the plans come into play, Smith said: "That is not known and it is too early to even discuss.
"The changes to the business model will eventually reduce the scale and scope of the New Zealand business over the coming years and it will in effect, require a smaller corporate management operation after 2016."
Holcim employs 420 staff in New Zealand.
It also announced it had final approvals for construction to begin on its two new import cement terminals - one at Timaru and the other in Auckland.
Holcim announced last year it was quitting cement manufacturing in New Zealand and replacing that with bulk importing of cement for the New Zealand market.