118 civilian jobs are due to go by the end of the summer at Dyfed Powys Police.
The force, which employs more than 800 staff, says the restructuring comes as the UK Government aims to reduce its budget.
The commissioner's office says no police officers will be made redundant or PCSOs. The Unison union is being consulted.
More top news
Transport Minister Edwina Hart has written to AMs announcing an end to the part time closure of junction 41 of the M4.
Venues across Wales are being encouraged to bid to host the Tower of London Poppies.
One Direction fans have been warned of possible travel disruption due to railway strike action.