Your company could receive a citation for failure to provide hand protection. That is, regardless of whether 29 CFR 1910, Subpart I applies to your company, you can be cited under the general duty clause. The employer is required to perform a hazard assessment of the workplace, evaluate the need for particular PPE, and select appropriate PPE for the hazards found. The hazard assessment must be verified in writing. A new section on hand protection is now included in this OSHA standard.
Painters are tradesmen and depend on their hands, legs, and eyes to earn their livelihood.
Contractors not only have a legal but a moral obligation to their employees to create a workplace free of safety and health hazards. If you as a contractor show genuine concern for your painters' safety and health by adopting an effective PPE program, morale will greatly improve. With better morale comes increased productivity, lower employee turnover, and higher profits. If you don't think safety pays, buy several pairs of safety sunglasses. You are too important to me.