Royal Mail has confirmed coronavirus cases at a Nottingham delivery site this year.
Four colleagues have tested positive for Covid this year at the Glaisdale Delivery Office, the company confirmed.
Royal Mail says it has carried out an intensive clean of the building in Glaisdale Parkway and the office is operating as normal.
Some colleagues are self-isolating who were identified through the track and trace app, which is supported by the office, and in line with both the business and Public Health England guidance.
A Royal Mail spokesperson added: “Royal Mail takes the health and safety of its colleagues, its customers and the local communities in which we operate very seriously.
“Throughout this crisis, every decision we make puts the health of our people and customers first. We have put in place a range of preventive measures to protect both our customers and our colleagues.
“We were the first UK company to put in place social-distancing measures in relation to parcel delivery. We pioneered contact-free delivery. We are temporarily not handing over our hand-held devices to customers to capture signatures.
“As well as encouraging good hand hygiene, standard ways of working have been revised to ensure that colleagues maintain appropriate social distancing at all times.
“All staff have been briefed about the social distancing measures jointly agreed by local management and the CWU. This has been supplemented with visible reminders such as posters and one-way floor markings”.