If any of his staff insist on coming in they will be told to go home, he said.
"It has been a horrid time for so many people across so many sectors”, the businessman said.
"The pubs and shops are opening up after months and I just want employees to know how much they are appreciated and to enjoy this day for themselves, not spend it sat in the office.
"Landlords and high street retailers need a boost too so I'm happy for my lot to spend the day supporting these businesses.”
However, Mr Donnelly added that his staff are not obliged to go out.
"And if they want to spend the day in bed - then good for them”, he said.
From Monday April 12 shops, hairdressers, nail salons, libraries and outdoor hospitality venues such as beer gardens will be allowed to reopen across England.
Most outdoor attractions, such as zoos and theme parks, can reopen as well, although mixing inside will still be banned.
Indoor leisure facilities such as gyms and swimming pools will also be opened but for use by people on their own or in household groups.