Stealing should be illegal in any case. It has nothing to do with labor laws.
> What if your employer wants to have sex with you?
Again. If you don't like prostitution, ban prostitution. It has nothing to do with labor laws.
> You either believe labor laws should exist or you don't.
> If you do, I don't think the answer need to be anything more than "common sense".
Those two sentences are classic logical fallacies. I can support just some labor laws and "common sense" is not an answer to anything.
It's a strange world we live in...
The post taken as a whole, on the other hand, and I think you may be onto something.
Let's say that every business adopted this "your passwords or your job" policy. There will be a set of employees/applicants with enough leverage in the job market that they can say "no", and move on with life.
There will also be a (much larger) set of employees and applicants that do not have that kind of leverage in the job market, and have to make a choice between their facebook password, and the freedom to starve. The former can rationally say "no". The latter rationally can't.
Limiting morality to those who can afford it doesn't sit well with me. I'm completely fine with the government stepping in to mitigate the effects of undue coercion in society.
Those who think that coercion only exists at the barrel of a gun, lack a certain amount of imagination.
A law that "protects" applicants from having the option to say "yes" lowers their income. Giving them the freedom to answer the question either way leaves them the choice between a higher income and the privacy of their Facebook account. It's not a happy choice, but if I valued the first more highly, I wouldn't like the government to force the second on me.
It seems infinitely more likely that employers would blanket policy everyone to give up their passwords, and every other bit of personal info period, or they wouldn't get a job.
I tend to fall more on the capitalist side of things. I wouldn't consider employment coercive, unless the bad alternative (e.g. starving) was actively being caused by the potential employers (something like "work for us for $1 an hour or else we will kick you off your land).
This is why the majority of people starting a business, fail. Looking at the comments here, people just give up at the first sign of trouble (or need mommy and daddy government to step in and make decisions on their behalf).
> "They can start a business or move onto a company that doesn't ask for any of this info."
Riiiiiiight. Because the blacks totally had that choice. And the women! And the Irish! And the Jews! It's kind of weird to me how libertarians model the world so simply - where culture doesn't exist, humans are perfectly rational actors, and all systems are 100% efficient. Real life isn't game theory.
1. Small societies where everyone has skills or resources that are essential to the others, or
2. Societies where everyone has resources to be self-sufficient.
There may also be a requirement that the society not be in competition with outside, non-libertarian societies for necessary resources, because libertarianism is poor at handling negative externalities. A non-libertarian society has the option of careful government regulation which allows better utilization of important natural resources.
You may be well off to afford not to work, there are lots of people for which that is the stark choice.
If enough people are angry about it, the employer will be forced to stop because they won't get enough candidates.