Workers at the Driving and Vehicle Licensing Agency (DVLA) offices in the region are joining colleagues across the country in a 24-hour strike today.
It's a dispute over closures and job losses at a number of sites across the country, which could include the Exeter and Truro offices.
The Public and Commercial Services union (PCS) is campaigning against planned office closures across the country, arguing it signals the end of a "highly prized" face-to-face service to motorists.
The union has delivered a 72,000 name petition opposing the closures, to the Department for Transport.
– Public and Commercial Services union (PCS) spokesman
Our petition was signed by members of the public, motor traders, representatives of motor trade federations and haulage and bus companies, and representatives of historic vehicle clubs.
We're very concerned about the lack of awareness among people that the offices are set to close or even that a consultation has been carried out.
– Stephen Hammond, Roads Minister
The DVLA has been serving motorists for more than 40 years but times and customers' needs change.
These changes - developed after carefully listening to views expressed at consultation - will ensure that the agency delivers a smarter service to bring real benefits for the motor industry and every motorist in this country.