Washington (CNN) Supreme Court Justice Ruth Bader Ginsburg returned to work Friday morning after missing a day of oral arguments this week due to a stomach bug.

Ginsburg, 86, is participating in the justices' regularly scheduled, closed-door conference, where they are expected to take an initial vote on a case concerning the future of the Obama-era Deferred Action for Childhood Arrivals program.

The four-time cancer survivor missed oral arguments on Wednesday due to a bout with the stomach flu.

A court spokesperson had said Ginsburg is expected to participate in the cases by reading the briefs.

Ginsburg missed oral arguments for the first time last term while recovering from surgery to remove two cancerous nodules from her left lung. She participated in the cases by reading transcripts.

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