; and (III) not later than 72 hours after termination, notify the Secretary of Agriculture of such termination and stating the nature of the contract impossibility. (l) Nondelegation The Department of Agriculture and the Department of Homeland Security shall not delegate their investigatory, enforcement, or administrative functions relating to this section or section 218B to other agencies or departments of the Federal Government. (m) Compliance with bio-Security protocols Except in the case of an imminent threat to health or safety, any personnel from a Federal agency or Federal grantee seeking to determine the compliance of an employer with the requirements of this section or section 218B shall, when visiting such employer’s place of employment, make their presence known to the employer and sign-in in accordance with reasonable bio-security protocols before proceeding to any other area of the place of employment. (n) Limitation on H–2C workers’ stay in status (1) Maximum period The maximum continuous period of authorized status as an H–2C worker (including any extensions) is 18 months for workers employed in a job that is of a temporary or seasonal nature. For H–2C workers employed in a job that is not of a temporary or seasonal nature, the initial maximum continuous period of authorized status is 36 months and subsequent maximum continuous periods of authorized status are 18 months. (2) Requirement to remain outside the united states In the case of H–2C workers who were employed in a job of a temporary or seasonal nature whose maximum continuous period of authorized status as H–2C workers (including any extensions) have expired, the aliens may not again be eligible to be H–2C workers until they remain outside the United States for a continuous period equal to at least 1/12 of the duration of their previous period of authorized status an H–2C workers. For H–2C workers who were employed in a job not of a temporary or seasonal nature whose maximum continuous period of authorized status as H–2C workers (including