San Francisco Mayor Daniel Lurie is ordering thousands of city employees back to the office at least four days a week, part of a move to strengthen city services while injecting life into the city’s struggling downtown.

In a memo obtained by SFGATE, Lurie set an April 28 deadline for full implementation, directing the Department of Human Resources to oversee the transition. The order primarily affects around 10,000 office-based employees who currently work hybrid schedules.