There's no federal law that requires it, but some states may. As far as the federal level goes, your employer should offer you coffee breaks and must pay you for the time you're on those breaks. However, if you're taking a lunch break of at least 30 minutes, then they don't have to pay you for that. But there is no mandatory period after which you must be given a break according to the The Fair Labor Standards Act (FLSA.
up to 6 with a little break
no
Only eight hours
Yes.
The benefits a part time employee receives depends largely on the employer. There are government rules on the number of hours one can work, as well as break time. However, health insurance and other benefits would depend on the employer.
If you mean can an employer compel an hourly employee to work without pay, then no, never. Hourly employees must be paid for all hours worked.
Yes an employer can deny giving you overtime hours but if you have already worked overtime then it is not okay for an employer to deny paying overtime once the hours have already been earned.
Only with the employer's consent.
1
No, not in the United States.
No, an employer cannot refuse to pay wages that are due to an employee. Florida law requires employers to pay employees for all hours worked, regardless of whether the employee still works for them or not. If an employer fails to pay wages owed, the employee can file a complaint with the Florida Department of Economic Opportunity or pursue a legal claim for unpaid wages.
It would be a rare employer that does not have rules against it. However, as a contractor, you can independently state your hours and how you do your work.