The Culinary Union ramped up the pressure Thursday on the company that provides food services at the Las Vegas Convention Center with a pair of loud picket lines protesting the lack of a contract.

Hundreds of workers marched along Paradise Road near Convention Center Drive and in front of the center’s North Hall for more than an hour, calling on Sodexo Live!, the multinational company that operates Sodexo Centerplate, the food-service provider at the Convention Center, to provide a better contract deal than offered.

Workers have been without a contract since late summer, and collective bargaining talks stalled in November.