Obvious one comes to mind: http://en.wikipedia.org/wiki/United_States_Federal_Witness_P...

It's not hard to think of others.

Negotiations. When you go to a new job and they tell you "How much do you make at your current position? Tell us, you have nothing to hide." what do you do?

Going on a tangent here, if they also assume this stance - meaning, they'll tell you everyone else's salaries - it can be quite interesting.

I can't quite find where I first saw this, but googling a bit brings up a few interesting example. For instance, http://99u.com/articles/15527/the-age-of-salary-transparency

If you are playing to win, you tell them you currently make whatever salary you are seeking. When they ask you what sort of salary you need, say something along the lines of "Obviously, I want to take a step forward, but I am pretty flexible, so if you can at least match my current pay, then I would be open to accepting".

While this tactic does fall into the grey area of morality, it is quite effective.

Dont companies pay equifax and such for employee salary data? I'd be careful on this one.

This is where you say "my total compensation is around $x". To me, "total compensation" includes pay, benefits, bonuses, the dollar value I put on how short my commute is, rough cost of free food in the office, how nice my chair is, etc. etc.

I also don't think they'll be able to do an equifax/transunion lookup without your permission. And it's perfectly reasonable to say no to that, as credit checks are bad for your credit.

"Well, I guess Eqifax is not that accurate" and "Oops. Thanks for letting me know I don't want to work here" would both be reasonable responses. Most companies are not doing this.

You say, tell me how much all your current employees make. Don't negotiate with someone who holds all the cards.

With respect to government contracts: It would really hurt a company if their detail pricing scheme was released, as a competitor could easily undercut if they had access to that information.

With respect to court documents: It could result is someone getting hurt or a mis-trial due to outside influences (ie. Rob Ford video)

There are obviously many reasons...

    It would really hurt a company if their detail pricing
    scheme was released, as a competitor could easily
    undercut if they had access to that information

If every company's pricing were public, wouldn't we just have healthy competition?

We would have competition. How healthy it would be is less certain.

Government contracts are usually public information already. More than once I've been at a company that sold something to a government agency, and the agency first had to publish what exactly they were buying and give someone else the ability to put in a better bid.

Contracts are usually public. Each companies bid for the contract is not, and in fact there are laws against government contracting officers letting such information become public, at least while the contract negotiation phase is still ongoing.

I REALLY hope they keep my personal login credentials for various gov web sites secret. Along with any other personal information they have on file.