YES
It depends on your employer and the particular rules where you are employed. You need to ask your supervisor about the company policy.
That depends on the employer and the employer's insurance policy.
An employer is the person or company that you work for. It is your responsibility as an employee to represent your employer by doing a good job.
Each employer's policy is different
The employee is essentially stealing wages from the employer because the employee is getting paid for not doing work for the employer.
If you're adequately covered through your husband's policy then there shouldn't be a need for you to get additional coverage through your company if it's full overlap. But you may want to compare the policies and see if your employer's policy is better, and maybe switch you both to yours and cancel the policy from his employer. Or, if your employer offers other coverages and his doesn't (e.g. vision coverage) consider doing primary medical through his and the supplemental coverage through yours. The one caveat to this would be if you think either of you could be out of work in the near future, in which case I'd take the safest course of action based upon your situations.
no Not under any LAW, but an employer may grant that in a contract or policy.
YES
The employee handbook or a manual that states company policy and procedure would determine if you can change clothes at work as an employee or employer.
Workers comp insurance has nothing to do with family members. Workers comp insurance is an insurance policy that your employer will have on if in case you get hurt at work.
No, you don't pay for it. An interesting thought, but it won't work.
If the employer has a reason for doing this it could be possible. You could contact the labor board and ask them about this question.