There is a point, of course, where the overload of broken trust, uncertainty, and job pressures becomes detrimental. Perhaps some of your staff are approaching that point. The Human Function Curve illustrates the progression of the problem:
The best strategy for alleviating much of their concern, I learned, was to give them some sense of control. Engage them in the process. I found that involving residents in planning for reuse of contaminated sites was particularly effective. It shifted focus from the negative to the positive. It also helped rebuild trust.
So what has this to do with curing the post-recession blues in your firm? I think many employees are in much the same place emotionally as those hazardous waste site neighbors. They are faced with new fears and stresses, and what is particularly unsettling is the feeling that there's not much they can do about it. I've heard several say in recent months that they're just waiting for "the other shoe to drop" (or something similar).
The best way to counter such feelings in my experience is to actively engage employees in working on solutions to the problems the company faces. Need more business? Spread participation in the business development process across the organization. There's something that people at every level can contribute (see this post). Facing increased pricing pressure? Invite staff to help identify opportunities to make your work processes more efficient.
Most employees would rather be fighting the battle than wondering if they'll end up as collateral damage. Invite them to be part of your firm's recovery efforts. Not only will that help rebuild trust and alleviate negative stress; but you'll end up with better solutions than management is likely to come up with on its own. And a larger team committed to making it happen.