The only questions that are truly legal are if the employee worked their and what their position was. They can also ask if they are eligible for rehire.
I would imagine that you are wondering if you can be sued for slander if you speak critically of a former employee. Generally speaking, it is legal to speak the truth. If you were planning to tell lies about your former employee, that could get you into trouble.
An employer can fire an employee for any reason at all and need not explain to the former employee. Firing an employee for personal reasons that do not involve race, sex, age, religion, or disability is perfectly legal for employers of any size.
the political and legal status of the former Confederate states
can an hourly employee Team Leader write up another hourly employee
By doing background checks on the employee before employing them. Some of these may be legal requirements and others due diligence in respect of the role the employee will be expected to perform.
No
It is legal to use on your kid or employee or on a phone you own
No.
yes
The only "legal reason" is if that employee had signed an "non compete" agreement.
There are several companies that offer prepaid legal as an employee benefit, a few of them are: Leo Kolbert, Apple, and even Sprint offers a form of prepaid legal services.