...District, which may require or involve the employment of laborers or mechanics shall contain a provision that no laborer or mechanic doing any part of the work contemplated by ithe contract, in the employ of the contractor or any subcontractor contracting for any part of said...

...the employ of the contractor or any subcontractor contracting for any part of said work contemplated, shall be required or permitted to work more than eight hours in any one calendar day upon such work; and every such contract shall stipulate a penalty for each violation...

...ARTICLE 17. Subject to the conditions enumerated in section 2 of the eighthour law of June 19, 3912. no laborer or mechanic doing any part of the work contemplated by this contract, in the employ of the contractor or any subcontractor contracting for any part of said...

...courts of the several States, Territories, or municipalities having criminal jurisdiction. ART. 13. No laborer or mechanic doing any part of the work contemplated by this contract, in the employ of the contractor, or any subcontractor contracting for any part of said...

...District, which may require or involve the employment of laborers or mechanics shall contain a provision that no laborer or mechanic doing any part of the work contemplated by the contract, in the employ of the contractor or any subcontractor contracting for any part of said work contemplated,...

...may appear warranted. Subject to the provision of section 2 of the eight-hour law of June 10, 1912, no laborer or mechanic doing any part of the work contemplated by the contract in the employ of the contractor or any subcontractor contracting for any part of said work contemplated...

...except in case of extraordinary emergency. (Act of Aug. 1, 1892, as amended by act of Mar. 3, 1913. ) 3. That no laborer or mechanic doing any part of the work contemplated by this contract, in the employ of the contractor or any subcontractor contracting for any part of said...

...Thirteenth. Subject to the conditions enumerated in section 2 of the eight-hour law of June 19, 1912, no laborer or mechanic doing any part of the work contemplated by this contract, in the employ of the contractor or any subcontractor contracting for any part of said...

...Thirteenth. Subject to the conditions enumerated in section 2 of the eight-hour law of June 19. 1912, no laborer or mechanic doing any part of the work contemplated by this contract, in the employ of the contractor or any subcontractor contracting for any part of said...

...Territories, or municipalities having criminal jurisdiction. ABTICI.E XT. Hours and conditions of labor. — No laborer or mechanic doing any part of the work contemplated by this contract, in the employ of the contractor or any subcontractor contracting for any part of said...