20 CFR § 655.170 - Extensions.
An employer may apply for extensions of the period of employment in the following circumstances.
(a) Short-term extension. Employers seeking extensions of 2 weeks or less of the certified Application for Temporary Employment Certification must apply directly to DHS for approval. If granted, the Application for Temporary Employment Certification will be deemed extended for such period as is approved by DHS.
(b) Long-term extension. Employers seeking extensions of more than 2 weeks may apply to the CO. Such requests must be related to weather conditions or other factors beyond the control of the employer (which may include unforeseen changes in market conditions). Such requests must be supported in writing, with documentation showing that the extension is needed and that the need could not have been reasonably foreseen by the employer. The CO will notify the employer of the decision in writing if time allows, or will otherwise notify the employer of the decision. The CO will not grant an extension where the total work contract period under that Application for Temporary Employment Certification and extensions would be 12 months or more, except in extraordinary circumstances. The employer may appeal a denial of a request for an extension by following the procedures in § 655.171.