Hospitality workers have accused two casino giants of failing to protect them from the coronavirus at their reopened Las Vegas Strip properties.

The Signature at MGM Grand, the Bellagio and Harrah’s have implemented lax rules and procedures that put employees at risk of spreading COVID-19 since Sin City’s gaming industry reopened on June 4, two labor unions allege in a federal lawsuit.

The properties — run by MGM Resorts International and Caesars Entertainment — were slow to inform staffers when their colleagues tested positive for the deadly disease and did not immediately shut down work areas where sick employees had been, the suit says. They also failed to adequately track down workers who had contact with ill staffers, according to the complaint filed Monday.