Legislation requiring predictable work schedules for some 65,000 hourly fast-food employees in New York City will be developed over the next several months, Mayor Bill de Blasio (D) announced Sept. 15.

De Blasio said he’ll work with the City Council and community, labor and business groups to develop the legislation, which would require fast-food employers to post planned schedules for most worker shifts two weeks in advance and pay workers extra to meet certain last-minute changes.

The legislation would also...