Agricultural Job Opportunity, Benefits, and Security Act of 2003

Agricultural Job Opportunity, Benefits, and Security Act of 2003 - Directs the Secretary of Homeland Security, upon completion of specified agricultural work and residency requirements, to adjust the status of a qualifying alien agricultural worker (and spouse and minor children) to that of a: (1) lawfully admitted temporary nonimmigrant; and (2) permanent resident nonimmigrant.

Sets forth provisions with respect to: (1) adjustment of status applications, including penalties for false statements; (2) waiver of numerical limitations and certain grounds for inadmissibility; (3) temporary stay of removal and work authorization; (4) administrative and judicial review; and (5) dissemination of program information.

Amends the Social Security Act to provide for the correction of such aliens' social security records.

Amends the Immigration and Nationality Act to set forth registry application requirements for H-2A employers and employer associations, including assurances: (1) that the job opportunity is temporary or seasonal, and is not the result of a labor dispute, (2) that attempts have been made to hire U.S. workers; and (3) respecting required wages and benefits, and compliance with labor laws.

Sets forth employment requirements with respect to: (1) wages; (2) housing; and (3) transportation reimbursement. Establishes the Commission on Agricultural Wage Standards under the H-2A program.

Revises provisions respecting the admission and extension of stay of temporary H-2A workers. Provides special rules for alien sheepherders.

Sets forth worker protection and labor standards enforcement provisions for such aliens