Universal says it now expects the economic impact of the COVID-19 pandemic to stretch into 2021.
Comcast CEO Brian Roberts said some guests may not return to theme parks until a COVID-19 vaccine is available.
Premier passholders can register for a preview on Friday, Sept. 18.
The rumor was reported by WDW News Today, a site which once said it was "at war" with the Walt Disney Company.
Additional notices filed with the state of Florida bring the total number of affected workers to 2,306.
The layoffs affected Loews Portofino Bay Resort, Cabana Bay Beach Resort, and Universal's Hard Rock.
Theme park news: Volcano Bay closing 2 days a week / Southwest flights to Orlando / Kings Island Fall Fest
While smaller parks have closed on certain days since reopening, this marks the larger Universal Orlando Resort's biggest reduction in operating hours during the pandemic.
Theme park news: Lawsuit alleges ‘dysfunctional construction mess’ at Disney / Universal ticket changes
The suit alleges the discovery of fire code violations was followed by misogynistic comments and refusals to cover increased costs from Disney.
Sapphire Falls and Aventura will temporarily close on Aug. 21 as Universal consolidates guests into fewer properties.