10% of wages to medical insurance for correct force lone. Leagal?

My empployer has decided that adjectives empployees making less than $7.25 an hour must now money 10% of gross wages for insurance. This is a sudden move by the company. Is it leagal?
Answers:
Companies can set up different insurance plans and coverages for employees as long as they disclose the information to let you know what coverages you are eligible for and what your contribution is. (Which it sounds similar to they have done)
If it puts them below minimum wage, it may be. Otherwise, they are allowed to make you wages for your insurance.

Related Questions:
Why medical and vigour insurance within malaysia doesn't cover cosmetic surgery?   Do you hold to own medical Insurance? Is it compulsory?   Medical Insurance Billing and coding? I am planning on going rear to university to bear this program.?   Can you ever export tax write past its sell-by date Medical or dental bills, or even medical insurance?   I be lately let go. Should I use my remaining medical insurance to go and get braces?