It is the duty of the director to inquire into the wages paid to employees and into the conditions of labor surrounding said employees in any occupation in this state if the director has reason to believe that said conditions of labor are detrimental to the health or morals of said employees or that the wages paid to a substantial number of employees are inadequate to supply the necessary cost of living and to maintain such employees in health. At the request of not less than twenty-five persons engaged in any occupation, the director shall forthwith make such investigation as is provided in this article. Such investigation may be made at any time, upon the initiative of the director.L. 17: p. 381, § 5. C.L. § 4266. CSA: C. 97, § 240. CRS 53: § 80-9-4. C.R.S. 1963: § 80-7-4. L. 69: p. 604, § 87. L. 77: Entire section amended, p. 429, § 4, effective July 1.