(d) Similarly employed. For purposes of this section, similarly employed means having substantially comparable jobs in the occupational category in the area of intended employment, except that, if a representative sample of workers in the occupational category can not be obtained in the area of intended employment, similarly employed means:
20 CFR § 656.40
Application process. The employer must request a PWD from the NPC, on a form or in a manner prescribed by OFLC. Prior to January 1, 2010, the SWA having jurisdiction over the area of intended employment shall continue to receive and process prevailing wage determination requests in accordance with the regulatory provisions and Department guidance in effect prior to January 1, 2009. On or after January 1, 2010, the NPC shall receive and process prevailing wage determination requests in accordance with these regulations and with Department guidance. The NPC will provide the employer with an appropriate prevailing wage rate. The NPC shall determine the wage in accordance with sec. 212(t) of the INA. Unless the employer chooses to appeal the center's PWD under 656.41(a) of this part, it files the Application for Permanent Employment Certification either electronically or by mail with the processing center of jurisdiction and maintains the PWD in its files. The determination shall be submitted to the CO, if requested.