Walt Disney World employees are taking it on the chin, hard -- the theme park is about to furlough 43,000 workers as it remains closed due to the coronavirus.

Orlando's Magic Kingdom, which has been shut down since March 16, reached agreements with its workers' unions, and will make the layoffs effective April 19 ... according to Forbes. Most of the employees are security guards and other workers involved in operating the facilities.

The Mouse House says the laid-off workers will keep their health benefits up to one year -- and Disney has agreed to pay for coronavirus testing for any employees who need it.

Of course, it's still unclear when Disney will reopen gates at its parks around the world. The massive park will now be staffed by only 200 people with "essential duties."

Forbes says Disney World is the largest single-site employer in the country ... and the massive layoffs are expected to have a domino effect on the Central Florida economy ... where so many other industries depend on Disney being open to stay in business.