5 U.S.C. § 6303: Annual leave; accrual

one-half day for each full biweekly pay period for an employee with less than 3 years of service; three-fourths day for each full biweekly pay period, except that the accrual for the last full biweekly pay period in the year is one and one-fourth days, for an employee with 3 but less than 15 years of service; and one day for each full biweekly pay period for an employee with 15 or more years of service. resulting from injury or disease received in line of duty as a direct result of armed conflict; or caused by an instrumentality of war and incurred in line of duty during a period of war as defined by sections 101 and 1101 of title 38; that service was performed in the armed forces during a war, or in a campaign or expedition for which a campaign badge has been authorized; or on November 30, 1964 , he was employed in a position to which this subchapter applies and thereafter he continued to be so employed without a break in service of more than 30 days. Notwithstanding subsection (a) of this section, an employee whose current employment is limited to less than 90 days is entitled to annual leave under this subchapter only after being currently employed for a continuous period of 90 days under successive appointments without a break in service. After completing the 90-day period, the employee is entitled to be credited with the leave that would have accrued to him under subsection (a) of this section except for this subsection. A change in the rate of accrual of annual leave by an employee under this section takes effect at the beginning of the pay period after the pay period, or corresponding period for an employee who is not paid on the basis of biweekly pay periods, in which the employee completed the prescribed period of service. to whom section 6304(b) of this title applies; whose post of duty is outside the United States; and who returns on leave to the United States, or to his place of residence, which is outside the area of employment, in its territories or possessions including the Commonwealth of Puerto Rico. was performed in a position the duties of which directly relate to the duties of the position to which such employee is so appointed; and meets such other requirements as the Office may prescribe; and in the judgment of the head of the appointing agency, the application of this subsection is necessary in order to achieve an important agency mission or performance goal. shall be creditable, for the purposes described in paragraph (1), as of the effective date of the employee’s appointment; and shall not thereafter cease to be so creditable, unless the employee fails to complete a full year of continuous service with the agency. An employee shall not be eligible for the application of paragraph (1) on the basis of any appointment if, within 90 days before the effective date of such appointment, such employee has held any position in the civil service. section 5376 or 5383; or a pay system equivalent to either of the foregoing, as determined by the Office of Personnel Management. Except as otherwise provided in this section, this Act and the amendments made by this Act [see Tables for classification] shall take effect as of the date of enactment of this Act [ Oct. 2, 1992 ]. The amendment made by section 4(c) [amending provisions set out as a note under section 4725 of Title 2 , The Congress] shall be effective as of December 31, 1991 . The amendments made by section 5(d) [amending section 8440d of this title ] shall be effective as of December 9, 1991 . The amendments made by sections 2(13) and 2(17) [amending section 4109 of this title and repealing section 3342 of this title ] shall be effective as of October 1, 1991 . The amendments made by sections 2(11), 2(19), 2(29), and 2(38) [amending sections 3324, 4505a, 5332, and 5403 of this title] shall be effective as of May 4, 1991 . The amendments made by section 2(25) [amending section 5302 of this title ] shall be effective as of February 3, 1991 . The provisions of section 8(a) and the amendments made by sections 2(57)(A), 2(60), 2(64), 2(67), 2(71), 2(75)(A), 3(1), 3(4), 3(6), and 5(a) [amending sections 5532, 8331, 8335, 8344, 8347, 8425, 8461, 8468, and 8901 of this title, repealing section 5380 of this title , enacting provisions set out as a note under section 5532 of this title , amending provisions set out as notes under sections 2105, 5304, 5305, 5378, and 8348 of this title, and repealing provisions set out as notes under sections 5380 and 5532 of this title] shall be effective as of November 5, 1990 . subchapter VI of chapter 55 of title 5, United States Code, based on a separation that takes effect or an election that is made before the date of enactment of this Act [ Oct. 2, 1992 ]; or section 5551(b) of title 5 , United States Code, which is attributable to an individual’s being excepted from subchapter I of chapter 63 of such title before the date of enactment of this Act. The amendment made by section 2(69) [amending section 8440 of this title ] shall be effective as of November 10, 1988 . The amendments made by sections 2(40), 2(41), 2(42), 2(43), and 3(5) [amending sections 5541, 5542, 5544, and 5547 of this title and provisions set out as a note under section 5305 of this title ] shall be effective as of the first day of the first applicable pay period beginning on or after the date of enactment of this Act [ Oct. 2, 1992 ]. The amendments made by section 2(28) [amending section 5314 of this title ] shall be effective as of the first day of the first applicable pay period beginning on or after November 5, 1990 . The amendment made by section 2(49) [amending section 5724 of this title ] shall apply with respect to a separation that takes effect on or after the date of enactment of this Act [ Oct. 2, 1992 ]. The amendment made by section 5(e) [amending section 1441a of Title 12 , Banks and Banking] shall apply with respect to any action (described in subclause (I) or (II) of the provisions struck by such amendment) occurring on or after the date of enactment of this Act [ Oct. 2, 1992 ].”