So less than 50 employees out of well over 100,000 employees in 7+ years across the mentioned theme parks. (The article itself states Disney alone employees some 70,000 in Florida at any given moment.)
Another CNN sensationalized article. There are a small percentage of people who do bad things everywhere - it would have been interesting to see if there was any higher percentage of arrests from theme park employees than another industry. But no, lets just scare people that the boogeyman is out to get them.