; (2) any individual who is required to complete a probationary period under this section receives timely notice of any requirements, including performance requirements, that must be met in order to satisfactorily complete such period; (3) any supervisor or manager of an individual who is required to complete a probationary period under this section receives notification of the end date of such period not less than 30 days before such date; and (4) if the head decides to retain an individual after the completion of a probationary period under this section, the head submits a certification to that effect, supported by a brief statement of the basis for the certification, in such form and manner as the President may by regulation prescribe. . (b) Technical amendment Section 3321(e) of title 5, United States Code (as so redesignated by subsection (a)(2)), is amended by striking Subsections (a) and (b) and inserting Subsections (a) through (d) . (c) Effective date This section and the amendments made by this section— (1) shall take effect 1 year after the date of enactment of this Act; and (2) shall apply in the case of any appointment (as referred to in section 3321(a)(1) of title 5, United States Code) and any initial appointment (as referred to in section 3321(a)(2) of such title) taking effect on or after the date on which this section takes effect. 3. Extension of probationary period for positions within the Senior Executive Service (a) In general Section 3393(d) of title 5, United States Code, is amended by striking 1-year and inserting 2-year . (b) Conforming amendment Section 3592(a)(1) of such title is amended by striking 1-year and inserting 2-year . (c) Effective date The amendments made by this section— (1) shall take effect 1 year after the date of enactment of this Act