Workers’ Compensation Insurance for Employee Leasing Companies; Specifying when a person is deemed an employee of an employee leasing company for workers’ compensation insurance purposes under circumstances relating to the company’s employee leasing arrangement with a subcontractor; providing that if an employee leasing company’s client company is a subcontractor, workers’ compensation insurance requirements are not satisfied by the employee leasing arrangement unless certain conditions are met; requiring certain client companies to maintain separate workers’ compensation insurance coverage unless certain conditions are met, etc.