Two McDonald's workers in Florida are filing a $500 million class action lawsuit against the company, claiming a "systemic sexual harassment problem" at company-owned stores.

The lawsuit was filed Monday in federal court in Illinois, where McDonald's is based. In the complaint, current McDonald's employee Jamelia Fairley and former employee Ashley Reddick say they were repeatedly subjected to sexual harassment and physical assaults at a company-owned McDonald's in Sanford, Florida.

Fairley and Reddick initially filed charges last May with the U.S. Equal Employment Opportunity Commission. The commission dismissed the case in January but informed both women they had the right to sue McDonald's within 90 days.

At least 50 workers have filed sexual harassment charges against McDonald's with the commission over the past four years, and McDonald's has acknowledged the problem.

In 2018, the company introduced harassment training for its U.S. franchisees and general managers. Last year, it released an enhanced anti-discrimination policy, started a hotline for employees to report problems and said it would provide a new training program for all of its 850,000 U.S. employees.

But in the lawsuit, Fairley and Reddick said McDonald's is not ensuring that franchisees provide the training. Franchisees own approximately 95% of McDonald's 14,000 U.S. restaurants. The lawsuit also said McDonald's isn't training store managers or adequately punishing serial harassers.

In a statement Monday, McDonald's said it is committed to ensuring that employees work in an environment free from discrimination and harassment. The company said employees at all of its company-owned stores are receiving training, and it is encouraging franchisees to provide it as well.

"The plaintiffs' allegations of harassment and retaliation were investigated as soon as they were brought to our attention, and we will likewise investigate the new allegations that they have raised in their complaint," the company said.

The lawsuit seeks $100,000 in damages for about 5,000 women who have worked at 100 company-owned stores in Florida since April 2016.