The sites provide free coronavirus tests to the public and for the obligatory weekly testing of employees.
Self-employed and domestic workers are also obliged to carry a negative coronavirus test in case they are asked to present it, the ministry said.
Employees who receive the first dose of the anti-coronavirus vaccine do not have to get tested once three weeks have passed.
Results are issued at the site or sent to people via SMS within 24 hours. The sites for Saturday are: