No person shall coerce or require any of his employees to deal with or purchase any article of food, clothing or merchandise of any kind whatsoever from any person, or exclude from work, punish, or blacklist any of his employees for their failure to deal with another or to purchase any article of food, clothing or merchandise whatsoever from another or at any place whatsoever. Nothing contained in this Section shall apply to the sale and purchase of uniforms.
Whoever violates the provisions of this Section shall be fined not less than fifty dollars nor more than one hundred dollars, or imprisoned for not less than thirty days nor more than ninety days, or both.