TALLAHASSEE, Fla. — Workers and organized labor groups took to protesting fast food companies last week in a multi-state effort to build public support for a $15 an hour minimum wage hike.

But a peek into one group’s own labor contract reveals a delicious irony.

The Restaurant Opportunities Center United, which claims the support of 13,000 restaurant workers and with at least 11 affiliates across the country, forbids its own workers from protesting against management.