; or (iii) the actual wage level paid by the employer to all other individuals in the job. (B) Special rule An employer can utilize a piece rate or other alternative wage payment system so long as the employer guarantees each worker a wage rate that equals or exceeds the amount required under subparagraph (A) for the total hours worked in each pay period. Compensation from a piece rate or other alternative wage payment system shall include time spent during rest breaks, moving from job to job, clean up, or any other nonproductive time, provided that such time does not exceed 20 percent of the total hours in the work day. (3) Employment guarantee (A) In general (i) Requirement Each employer petitioning for workers under this subsection shall guarantee to offer the H–2C workers and United States workers performing the same job employment for the hourly equivalent of not less than 50 percent of the work hours set forth in the work contract. (ii) Failure to meet guarantee If an employer affords the United States workers or the H–2C workers less employment than that required under this subparagraph, the employer shall pay such workers the amount which the workers would have earned if the workers had worked for the guaranteed number of hours. (B) Calculation of hours Any hours which workers fail to work, up to a maximum of the number of hours specified in the work contract for a work day, when the workers have been offered an opportunity to do so, and all hours of work actually performed (including voluntary work in excess of the number of hours specified in the work contract in a work day) may be counted by the employer in calculating whether the period of guaranteed employment has been met. (C) Limitation If the workers abandon employment before the end of the work contract period, or are terminated for cause, the workers are not entitled to the 50 percent guarantee described in subparagraph (A). (D) Termination of employment (i) In general If, before the expiration of the period of employment specified in the work