the arrival of the worker at the place of employment and ending on the date specified in the job offer. For purposes of this subparagraph, the hourly equivalent means the number of hours in the work days as stated in the job offer and shall exclude the worker’s Sabbath and Federal holidays. If the employer affords the worker less employment than that required under this paragraph, the employer shall pay the worker the amount which the worker would have earned had the worker, in fact, worked for the guaranteed number of hours. (B) Failure to work Any hours which the worker fails to work, up to a maximum of the number of hours specified in the job offer for a work day, when the worker has 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 job offer in a work day, on the worker’s Sabbath, or on Federal holidays) may be counted by the employer in calculating whether the period of guaranteed employment has been met. (C) Abandonment of employment