; and (ii) covers up to 120 percent of the wages that the employer pays to eligible individuals who are employed under the program in a position not covered by a collective-bargaining agreement in effect with the employer. (B) Hiring requirements (i) Workforce (I) In general To remain eligible to receive additional placements of subsidized employees under this Act, a participating employer who seeks to employ, on a cumulative basis, more than 15 eligible individuals under the program shall be required to hire, in an unsubsidized capacity, not less than the greater of 4 employees or 25 percent of the employees who were previously placed with the employer through the subsidized job program. (II) Exception The requirements of subclause (I) shall not apply during a period that is an economic recession. (ii) Nondisplacement of unsubsidized employees The grantee may not employ an individual under the program, if— (I) employing such individual will result in the layoff or partial displacement (such as a reduction in hours, wages, or employee benefits) of an existing employee of the grantee who was not hired under the program, or will result in infringing upon the promotional opportunities of such existing employee; or (II) such individual will perform the same or substantially similar work that had previously been performed by such an existing employee who— (aa) has been laid off or partially displaced