Hundreds of KiwiRail staff could lose their jobs this week as the company embarks on cost-cutting measures.
More than 180 jobs are at stake as the state-owned enterprise aims to cut spending by around $200 million.
Meanwhile, employees are waiting to find out which roles and locations will be targeted.
Chief Executive Jim Quinn has asked employees who may be keen for voluntary redundancy to help with the reduction in numbers.
He said the changes are not about doing the same amount of work with less staff, but doing less in a more efficient and planned way.
The company's new structure is due to be implemented by October.