Yes. I'm sure multiple properties are in discussions already. The deal we just signed gave sick protections and improved (50 hour) loas, but also suspended most forms of premium pay. That's a concession.
The name of the game is cash conservation. Yes the companies are all waiting to see what they get in bailout funds but they all know it will be certainly less than they want and probably less than they need so the difference will have to be made up elsewhere on the balance sheet.
Air Canada just furloughed 5100 flight attendants yesterday. Sadly this thing isn't going to end with a few guys taking early retirement and a couple of low credit vacation months. Understand that big contractual cuts will provably be made or (and?) Guys will get bumped off the list before this is all over. How fast guys get bumped, and where it stops depends on a whole lot of things but a big one is cost control. Just remember though when weighing what you are ok loosing, hourly pay is much easier to get back than work rules.