Federal Reserve Chair Janet Yellen and her top two lieutenants, all speaking publicly Wednesday, have a chance to drive home a united message about their readiness to raise interest rates in December if the labor market continues to show modest improvement.

Yellen testifies before the House Financial Services Committee at 10 a.m. on Capitol Hill. The official topic is financial regulation, but lawmakers are free to ask her anything, including about monetary policy or the economy. New York Fed President William C. Dudley will hold a press briefing at 2:30 p.m. in New York, and Vice Chairman Stanley Fischer will speak to the National Economists Club in Washington at about 7:30 p.m.

“This is a unique opportunity to reinforce the message” from last week’s Federal Open Market Committee, said former Fed Governor Laurence Meyer, who is now senior managing director of Macroeconomic Advisers LLC in Washington.

The trio of appearances follows an unexpectedly upbeat message from the FOMC on Oct. 28. Officials emphasized the positive in a mixed bag of domestic economic data, dropped a prior reference to troubling global conditions and drew specific attention to the possibility of a rate hike at the panel’s next session. Expectations for a December move rose sharply, reflected in Treasury notes and federal funds futures.

The FOMC statement referred to the group’s “next meeting” on Dec. 15-16 in its discussion of liftoff timing.

By hitting the same note on Wednesday, Yellen, Fischer and Dudley could help squelch an unusual period of public disharmony at the Fed that has confused investors and led to criticism of its communications.

The FOMC had appeared on track for a September policy move before market volatility caused by China’s surprise currency devaluation in mid-August raised new worries over the health the world’s second-biggest economy. From there, committee members appeared to move in different directions.

Dudley on Aug. 26 called the case for a September hike “less compelling.” Fischer tried to keep September on the table three days later in a speech at the Kansas City Fed’s annual Jackson Hole symposium, hardly mentioning China and declaring his faith that low inflation, a sticking point for those resisting a rate increase, was being held down by temporary factors.

By the time the panel gathered Sept. 16-17, market turmoil had subsided, yet officials left rates near zero over worries that China’s slowing economy would stunt growth and inflation in the U.S.

Yellen followed the meeting with a cautious-sounding press conference, then tacked the other way on Sept. 24, revealing that she was among policy makers who still saw a rate rise as likely to happen before the end of the year.