; termination for cause If the worker voluntarily abandons employment without good cause before the end of the contract period, or is terminated for cause, the worker is not entitled to the guarantee of employment described in subparagraph (A). (D) Contract impossibility If, before the expiration of the period of employment specified in the job offer, the services of the worker are no longer required for reasons beyond the control of the employer due to any form of natural disaster before the guarantee in subparagraph (A) is fulfilled, the employer may terminate the worker’s employment. In the event of such termination, the employer shall fulfill the employment guarantee in subparagraph (A) for the work days that have elapsed from the first work day after the arrival of the worker to the termination of employment. The employer shall make efforts to transfer a worker to other comparable employment acceptable to the worker. If such transfer is not affected, the employer shall provide the return transportation required in subsection (f)(2). (7) Wage standards after 2033 (A) Study of adverse effect wage rate Beginning in fiscal year 2030, the Secretary of Agriculture and Secretary of Labor shall jointly conduct a study that addresses— (i) whether the employment of H–2A workers has depressed the wages of United States farm workers; (ii) whether an adverse effect wage rate is necessary to protect the wages of United States farm workers in occupations in which H–2A workers are employed; (iii) whether alternative wage standards would be sufficient to prevent wages in occupations in which H–2A workers are employed from falling below the wage level that would have prevailed in the absence of H–2A employment; (iv) whether any changes are warranted in the current methodologies for calculating the adverse effect wage rate and the prevailing wage rate