SAN FRANCISCO — Lyft said Thursday it plans to shut down in California just before midnight, as a ruling forcing the company to make its drivers employees takes effect.

Uber and Lyft have said they would suspend their ride-hailing service here beginning Friday unless a California Superior Court decision requiring them to give drivers full employment was delayed while they appeal. A California appeals court has yet to rule on their pleas for a stay, although a ruling is expected as soon as Thursday.