Nein.
Canada & U.S. Would have slightly different laws, but submitting a "letter of resignation" by paper or electronically would take precedence over a claim of being "fired" on any separation papers. It's actually easier for the employer to accept the resignation than to "fire" an employee.
Only if your employer happens to be a branch of the US military.
Absolutely not it has nothing to do with the employer
Only if the employee is illegal. then fire him.
No
You remind the employer that it can fire whoever it wants, but has noi choice about paying for all hours worked.
Not if the employee told him in advance with proof.
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.
Yes. An employer can fire anyone who fails a drug test regardless of their criminal history. FYI, in the majority of US states an employer has the right to fire any employee as long as the employee's status is not protected under EEOC laws and regulations regarding discrimination.
No. But an employer can, in most cases, fire an employee for not writing one. The "at will" employment doctrine means an employer can fire an employee for pretty much any reason they want so long is they don't violate specific anti-discrimination laws. Since there's no anti-discrimination law that covers apology letter writing employers have free hand. The exception might be if you have an employment contract that spells out in greater detail elements of your employment such as term of employment and detailed job responsibilities. In such a case the employer could still fire you but you might have a case in court for contract violation.
if another employee made a mistake can my employee make me fix it for free and if i refuse can he fire me
obviously...!