; and (C) seek and hire another H–2C nonimmigrant in accordance with subsection (e)(4). (3) At-will employment Notwithstanding any other provision of law, employment pursuant to this section shall be considered at-will unless specified by a contract agreed to by the H–2C nonimmigrant and the registered employer. (j) Promotion A registered employer may promote an H–2C nonimmigrant if the H–2C nonimmigrant has been employed with that employer for a period of not less than 12 months. Such a promotion shall not increase the total number of registered positions available to that employer. (k) Assessing the Impact of the H–2C Program (1) Study The Director of the Bureau of the Census, jointly with the Secretary, the Secretary of Energy, the Secretary of Health and Human Services, the Secretary of Housing and Urban Development, the Secretary of the Interior, the Secretary of Labor, the Secretary of Transportation, the Secretary of the Treasury, and the Attorney General, shall undertake a study examining the impacts of this section as well as a possible future permanent H–2C program on the infrastructure of, and quality of life in, the participating metropolitan statistical areas and counties. (2) Report Not later than 3 years after the date of the enactment of the Workforce for an Expanding Economy Act, the Director of the Bureau of the Census shall submit to Congress a report on the findings of the study required by paragraph (1), including the following information: (A) An estimate of legal and illegal immigrants in participating counties and metropolitan statistical areas, the estimated change in those populations since commencement of the program, and the estimated change to the number of United States workers in such counties and metropolitan statistical areas. (B) The impact of H–2C nonimmigrants on employment and wage rates for United States workers in State labor markets affected by worker inflows into the full employment areas where the program operates. The study should pay particular attention to the