I don't know much in the way of details but there's this quote from the article implying the get meals:

> “Would help ease the cost of not having hot food and snacks at work five days a week also.”

There's also this article (https://www.bloomberg.com/news/articles/2019-05-13/facebook-...) which implies the minimum wage for their contractors is $18/hr in low cost areas and $22/hr in high cost areas.