Employment laws vary from state to state and country to country. You'll have to specify the jurisdiction to find out if there are any laws that would apply there.
You are not legally required to know your social security number, however, there are many situations in which you will need to know it; you cannot apply for a job or open a bank account without a social security number.
8 hours in the UK...
12
In the UK - it all depends on the 'Working Time Directive'. If a security officer is happy to work more than the legal working week of 48 hours - he must sign a document waiving his right to restrict his hours. Otherwise the maximum working week is legally set at 48 hours.
The answer will depend on where in the world and whether you are talking about legally permitted hours or the reality.
24
Working long hours and hard doesn't make you insane.
No not as such. However many of them are not legally sold without the prescription of a doctor
4, without a kennel license
you can survive 168 hours without water, aka: 7 days
two days without 3 hours?
(in the US) Usually not more than 24 hours - or in the case of jurisdictions not having 24 hour court - until the next regularly scehduled session of court.