The 44-year-old Desperate Housewives alumna took to Twitter on Monday and weighed in on the former America's Got Talent judge's recent firing.
"What @gabunion experienced on set at @NBC's #AmericasGotTalent is unacceptable," she tweeted along with an article about Time's Up's response to Union's termination. "It's time for @NBCUniversal to commit to long term, concrete action to fix its toxic workplace culture and ensure safety and equity for all its workers."
Longoria also thanked the 47-year-old actress for "speaking up about toxic culture" at NBC's America's Got Talent and shared a Time's Up petition "calling for accountability and concrete action from @NBCUniversal leadership."
In November, news broke that Union and Julianne Hough, who joined America's Got Talent earlier this year, would not be returning as judges. Later that month, Variety published a report claiming "insiders" alleged there was a "toxic culture at the show."