More than 1,000 civilian workers at Lincolnshire Police have been sent e-mails about voluntary redundancy as the force aims to cut its staff.
The police chief has sent the e-mails to civilian staff asking them if they want to consider voluntary redundancy.
It is understood only 60 posts need to be cut.
John Gooding, chairman of the Lincolnshire Police branch of Unison, said the force was working to minimise the impact.
"It is a time for change and a lot of the roles that have been done in the past are not necessarily been done in the best possible way," Mr Gooding said.
"This is a challenge to look at it and say 'is there a better way of doing this role?'"
The force is aiming to cut £20m over the next four years in line with government spending targets.
About 70 police posts are also being cut with officers not being replaced when they retire or resign.
Separate police divisions are being scrapped in the plans to further cut costs.
Police authority chairman Barry Young said getting rid of those boundaries will make the system more flexible in terms of where officers can be deployed.
"It will not have the slightest effect on knowledge or local police numbers - it will help streamline things at a time when it is absolutely essential to do that," he said.