Sure he can refuse to pay you. You can also sue him in small claims court to try and recover lost wages. That may very well be you last resort if he refuses to pay you.
strike ... or resignation.
Yes, the employer can ask. But you can always refuse and take the consequences.
If your employer does not provide you with an appropriate MSDS you may refuse to work with the product after one working day.
Yes
Strike or Boycott
Not positive, but No, you must be paid for any work for/from your employer or you can refuse to do it. However whatever you broke or anything they can deduct from your check.
Aside from the value of going home to their families healthy and in one piece, the authority for selling safety to employees is that the employer wants the work done safely and will discipline or fire those who, knowing the safe way, refuse to do the work safely. If an employer does not in fact care that the work be done safely, no amount of sales pitches will sell safety to employees.
if another employee made a mistake can my employee make me fix it for free and if i refuse can he fire me
They can if you failed to report your criminal act to your employer. Certain crimes can affect your ability to work in certain environments. Employers usually refuse to hire people with certain criminal records. For example if you work in a shop or department store, an employer will not usually continue to hire you if you have a criminal record for shoplifting. The victim-store you shoplifted from can report you to your employer if you or the police haven't done so already. By law, your employer must be updated with things such as criminal convictions their employees have. The store you stole from is just trying to protect another business from a potential risk of criminal activity by one of their own employees. That being said, I would be more concerned with how they found out where you work. That should be protected information.
There is none. Anything done on the employer's computer system is the property of the employer.
The agreed contractual employer can and will report you to immigration.
Yes, if the employee is no longer capable of performing one or more essentila work functions, or poses a danger to self or others.