; and (B) his or her wages reduced to 80 percent or less of his or her average weekly wage in such adversely affected employment. (10) The term State agency means the agency of the State which administers the State law. (11) The term State law means the unemployment insurance law of the State approved by the Secretary of Labor under section 3304 of the Internal Revenue Code of 1986. (12) The term total separation means the layoff or severance of an individual from employment with a company in which, or in a subdivision of which, adversely affected employment exists. (13) The term unemployment insurance means the unemployment compensation payable to an individual under any State law or Federal unemployment compensation law, including chapter 85 of title 5, United States Code, and the Railroad Unemployment Insurance Act. The terms regular compensation , additional compensation , and extended compensation have the same respective meanings that are given them in section 205 of the Federal-State Extended Unemployment Compensation Act of 1970 ( 26 U.S.C. 3304 note). (14) The term week means a week as defined in the applicable State law. (15) The term week of unemployment means a week of total, part-total, or partial unemployment as determined under the applicable State law or Federal unemployment insurance law. I Petitions and Determinations 101. Petitions (a) In general A petition for certification of eligibility to apply for adjustment assistance for a group of workers under this Act may be filed simultaneously with the Commission and with the Governor of the State in which such workers’ company is located by any of the following: (1) The group of workers. (2) The certified or recognized union or other duly authorized representative of such workers. (3) Employers of such workers, one-stop operators or one-stop partners (as defined in section 101 of the Workforce Investment Act of 1998 ( 29 U.S.C. 2801 )), including State employment security agencies, or the State dislocated worker unit established under title I of