Watch: McDonald's Employees Reveal How They Were Told To Treat Burns With Mustard

Not long after the news that McDonald's employees across 19 U.S. cities had filed workplace safety complaints about the company, including one from an employee who was allegedly advised to treat a burn with mayonnaise, a damning video has surfaced from the wage rights group known as Fast Food Forward, or Fight for $15.

In the video below, you'll see how McDonald's employees, at least in some locations, were instructed to deal with hot oil, which is more than capable of burning someone.

For starters, there's no additional safety equipment or protective gear, as the complaints have already noted.

If that's not enough, a former McDonald's employee even describes how she was told to deal with a burn. "Just put some mustard on it," she was told. "That will take the burn out."

So far, McDonald's only response has been to denounce the accusations, with one representative portraying the company's own employees as the enemy.

"It is important to note that these complaints are part of a larger strategy orchestrated by activists targeting our brand and designed to generate media coverage," said a spokesperson for McDonald's.