(820 ILCS 125/4) (from Ch. 48, par. 198.4)
    Sec. 4. The Department shall have the power, and it shall be its duty on the petition of fifty or more residents of any county in which women or minors are employed in any occupation, to make an investigation of the wages being paid to women or minors in an occupation to ascertain whether any substantial number of women or minors in such occupation are receiving oppressive and unreasonable wages. If, on the basis of information in its possession with or without a special investigation, the Department is of the opinion that any substantial number of women or minors in any occupation or occupations are receiving oppressive and unreasonable wages the director shall appoint a wage board to report upon the establishment of minimum fair wage rates for such women or minors in such occupation or occupations.
(Source: Laws 1945, p. 814.)