The U.S. Chamber of Commerce has thrown its weight behind Facebook Inc.'s effort to appeal a recent federal court decision that addressed whether workers who’ve executed arbitration agreements must be notified of wage and hour lawsuits.

The chamber says the issue requires prompt appellate review. The U.S. Court of Appeals for the Fifth Circuit is the only federal appeals court to have made an affirmative ruling on the question. The court there ruled that Fair Labor Standards Act collective action opt-in notices shouldn’t be sent to JP Morgan Chase employees who had executed arbitration agreements. That’s contrary to what the...