Volunteers who carry out essential duties but are unable to work from home will have access to twice-weekly asymptomatic testing from Monday, 1 March.
It is part of the national Community Testing Programme, which is being delivered in Cornwall by Cornwall Council.
The scheme uses rapid Lateral Flow Tests (LFTs) to ensure organisations can continue to operate as efficiently as possible while protecting their staff and the wider community.
Staff and volunteers can be tested at one of three drive-through sites in the car parks of the Council offices in Camborne (Dolcoath Avenue), St Austell (Penwinnick Road) or Liskeard (Luxstowe House). They are open seven days a week between 9.30am and 4.30pm.
Those who test positive will be asked to self-isolate immediately to help prevent the spread of Covid-19.
Around one in three people who test positive have no symptoms.