BW Online (yes, they have become my favorite source) has a slideshow called "10 Tips for Engaging Employees." It is obviously important to motivate your team to produce on time and on budget, but these tips are simple things you can do to keep morale high. And as we all know, high morale will improve productivity!
Here are some of my favorites, and why you should do them: (1) Ask your employees for suggestions and help - it shows that you value your employees' ideas, and lets them feel some ownership in decision-making. (2) Act quickly in response to employees' concerns - this will demonstrate that you take them and their concerns seriously. (3) Say thanks for the little things they do outside of their job description, for excelling at a particular task, or for being consistently reliable - I'm sure I don't need to tell you why this works!