More than 300 employees for Vox Media staged an official walkout Thursday, hoping to shut down the site and pressure Vox Media to sign a labor contract with the Vox Media Union.

In a Thursday morning tweet, the Vox Media Union wrote that they were “not showing up to work today” because they were unable to agree on wage scales, guaranteed wages, better severance packages, and more subcontracting work. Pictures followed of empty desks in the New York Vox Media Office.