20 C.F.R. § 656.21
(b) Requirements. Supervised recruitment shall consist of advertising for the job opportunity by placing an advertisement in a newspaper of general circulation or in a professional, trade, or ethnic publication, and any other measures required by the CO. If placed in a newspaper of general circulation, the advertisement must be published for 3 consecutive days, one of which must be a Sunday; or, if placed in a professional, trade, or ethnic publication, the advertisement must be published in the next available published edition. The advertisement must be approved by the Certifying Officer before publication, and the CO will direct where the advertisement is to be placed.
(2) The advertisement must:
(c) Timing of advertisement.
(e) Recruitment report. The employer must provide to the Certifying Officer a signed, detailed written report of the employer's supervised recruitment, signed by the employer or the employer's representative described in § 656.10(b)(2)(ii), within 30 days of the Certifying Officer's request for such a report. The recruitment report must: