It is unlawful for a person charged or entrusted by another with the employment or continuance in employment of any workmen or laborers to demand or receive, either directly or indirectly, from a workman or laborer employed or continued in employment through his agency or under his direction or control, a fee, commission or gratuity of any kind as the price or condition of the employment of the workman or laborer, or as the price or condition of his continuance in such employment. Any person charged or entrusted with employment of laborers or workmen for his principal, or under whose direction or control the workmen and laborers are engaged in work and labor for the principal, who violates a provision of this section is guilty of a class 2 misdemeanor.