Well, this one said "TEAMWORK" and had a picture of the Great Wall of China.
That's pretty fantastic, since the Great Wall of China was built largely on forced labor, and hundreds of thousands of people died during its construction. But I guess it's better than giving office workers the plague.
Homer: Thanks for giving me my old job back.
Burns: I'm afraid it's not that simple. As punishment for your desertion, it's company policy to give you the plague.
Smithers: Uh, sir, that's the plaque.
Burns: Ah yes, the special demotivational plaque to break what's left of your spirit. Because, you see, you're here forever.