1. Government workers are your fellow citizens, and they have a right to privacy as everyone else. I don't think "how much a specific low-level government worker earns" is anybody else's business. If you are worried about government spending, you should be able to check aggregate statistics.

2. If companies can spend/earn $1B without anyone knowing, how are we going to tax them properly? If only the government knows and no one else, then we're basically asked to trust the government and corporations to be honest. When they are't, they cause much more financial harm to me (because my tax has to make up for it) than some county office giving everyone a higher raise than necessary.