108 STAT. 3154 PUBLIC LAW 103-353—OCT. 13, 1994 regulations prescribed by the Secretary of Defense and shall not be subject to judicial review. "(c) Subsection (a) shall apply to a person who is absent from a position of employment by reason of service in the uniformed services if such person's cumulative period of service in the uniformed services, with respect to the employer relationship for which a person seeks reemployment, does not exceed five years, except that any such period of service shall not include any service— "(1) that is required, beyond five years, to complete an initial period of obligated service; "(2) during which such person was unable to obtain orders releasing such person from a period of service in the uniformed services before the expiration of such five-year period and such inability was through no fault of such person; "(3) performed as required pursuant to section 270 of title 10, under section 502(a) or 503 of title 32, or to fulfill additional training requirements determined and certified in writing by the Secretary concerned, to be necessary for professional development, or for completion of skill training or retraining; or "(4) performed by a member of a uniformed service who is— "(A) ordered to or retained on active duty under section 672(a), 672(g), 673, 673b, 673c, or 688 of title 10 or under section 331, 332, 359, 360, 367, or 712 of title 14; "(B) ordered to or retained on active duty (other than for training) under any provision of law during a war or during a national emergency declared by the President or the Congress; "(C) ordered to active duty (other than for training) in support, as determined by the Secretary concerned, of an operational mission for which personnel have been ordered to active duty under section 673b of title 10; "(D) ordered to active duty in support, as determined by the Secretary concerned, of a critical mission or requirement of the uniformed services; or "(E) called into Federal service as a member of the National Guard under chapter 15 of title 10 or under section 3500 or 8500 of title 10. "(d)(1) An employer is not required to reemploy a person under this chapter if— "(A) the employer's circumstances have so changed as to make such reemployment impossible or unreasonable; "(B) in the case of a person entitled to reemployment under subsection (a)(3), (a)(4), or (b)(2)(B) of section 4313, such employment would impose an undue hardship on the employer; or "(C) the employment from which the person leaves to serve in the uniformed services is for a brief, nonrecurrent period and there is no reasonable expectation that such employment will continue indefinitely or for a significant period. "(2) In any proceeding involving an issue of whether— "(A) any reemployment referred to in paragraph (1) is impossible or unreasonable because of a change in an employ- er's circumstances, "(B) any accommodation, training, or effort referred to in subsection (a)(3), (a)(4), or (b)(2)(B) of section 4313 would impose an undue hardship on the employer, or
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