Residents are advised to be vigilant following the theft of Derbyshire County Council work wear an identification badge under the name of Richard West.
The thefts occurred in the Alfreton area, overnight between Wednesday, July 18 and Thursday July 19.
The town’s Safer Neighbourhood Team says all council visits should be by appointment.
If workmen attend without an appointment please confirm their identity with Derbyshire County Council on 08 456 058 058 before allowing anyone access.
If you have any information regarding this incident contact the Volume Crime Team on 101 quoting crime number 31361/12. If a council worker visitor is persistent or becomes aggressive please call 999.