what adva/disadva to the employer for ensuring that employment rights and responsibilities are provided?

Answer 1

If you live in the US:

Advantage:compliance to certain labor laws. The lawsuits for non-compliance are sure to close your business down. It only takes 1 unhappy employee to report you.

Disadvantage: It may cost you more initially.

In this case, I think the advantages far outweigh the disadvantages.