This includes workers at quarantine facilities, cold stores, container terminals and community testing centres, as well as medical staff at the infection control centre of North Lantau Hospital.
Those who have been fully vaccinated are required to get tested for Covid every three days, while people who have not received the jabs will have to get tested every day.
“The enhanced testing arrangement is expected to be implemented consecutively within the coming month for groups such as the working staff of designated quarantine hotels, quarantine facilities and relevant designated transport, cold store practitioners, staff of designated container terminal and shipping services, and working staff of community testing centres,” a statement said.
The government said the measure is part of efforts to stem the virus under Hong Kong’s “zero-Covid” strategy.
The SAR recorded two new imported infections on Thursday.