As long as it's potentially relevant to the job, yes.
You can always quit and refuse to supply information. If it involves legal issues, you will end up having those legal issues if they so chose.
A past employer may give a prospective employer an overview of the employee's employment record. They can give their opinion about the employee's character.
How much notice does an employer have to give an employee when changing their schedule?
None. You have no right to any information unless you are a union employee, in which case the union contract may cover this issue. You'd have to read the contract.
The way that an employer would refuse to give an employee a handbook is they are trying to with hold a benefit.
No
Most employers will provide that information (and pretty much only that information) about former employees.
Sure can. It belongs to the company and not the employee.
Whenever their employer chooses to give them one.
Not since 1994.
2 weeks
If an employer is transferring an employee, the letter should include the location of transfer. The letter should also include when and the reason for the transfer.
Initiate a conversation with the employer to discuss any concerns