SECTION 1. Section 26 of Chapter 149 of the General Laws, as appearing in the 2010 Official Edition, is hereby amended by striking out the third sentence and inserting in place thereof the following:-

The rate per hour of the wages paid to said mechanics and apprentices, teamsters, chauffeurs and laborers in the construction of public works shall be the rate or rates of wages to be determined by the commissioner taking into consideration a wage rate or wage rates that have been established in certain trades and occupations by collective agreements or understandings in the private construction industry between organized labor and employers, provided, that in towns where no such rate or rates have been so established, the wages paid to mechanics, teamsters, chauffeurs and laborers on public works, the commissioner shall take into consideration the wages paid to the employees in the same trades and occupations by private employers engaged in the construction industry.