A dedicated team will spend four weeks on the road from 2 August handing out the retailer's original glazed doughnuts.
High-profile business locations in cities such as London, Birmingham, Portsmouth and Cardiff have been singled out to receive treats. It is hoped the campaign will engage workers and encourage online interaction via exclusive on-pack promotions and competitions.
"Every workplace has an office hero that person who can be relied on to bring in treats to brighten up a Monday or celebrate a birthday," said Katie de Souza, Krispy Kreme's head of marketing. "We're working to engage this office audience and show them that a Krispy Kreme Dozen is a great choice."