It is part of the PWA.
One thing that I have noticed is that many times, if there are only say four meals and six FA's, they will give our meals to the other two, and then call up and tell us that they forgot to cater our meals.
I listen to this exchange on the inter phone and just roll my eyes. I always make sure I have something, because even if you catch them in the act they will deny it.
I will then get a call, if we are lucky, and they will tell us that all is left is the fruit and cheese platter. I will say the NYC FA's are the best, and almost never do this. It is or ATL ones that have been guilty the most.
That would have been a great time to take the opportunity to buy the most expensive thing on the menu at your layover and fill out an expense report for it because you didn't get your meal.