CFR > Title 5 - Administrative Personnel > CHAPTER I—OFFICE OF PERSONNEL MANAGEMENT > SUBCHAPTER B—CIVIL SERVICE REGULATIONS (parts 110 to 990) > PART 319—EMPLOYMENT IN SENIOR-LEVEL AND SCIENTIFIC AND PROFESSIONAL POSITIONS > SUBPART D—Recruitment and Examination (§319.401 to §319.402) > 319.402—Scientific and professional positions.

319.402—Scientific and professional positions.

(a) ST positions are filled without competitive examination under 5 U.S.C. 3325.
(b) ST positions are not subject to the citizenship requirements in 5 CFR part 338, subpart A. Agencies, however, must observe any restrictions on the employment of noncitizens in applicable appropriations acts.
(c) ST employees acquire competitive status immediately upon appointment. They are not required to serve a probationary or trial period.