5 CFR §451.302

1. (a)The circumstances under which the President may award the rank of Distinguished Senior Professional and Meritorious Senior Professional to a senior career employee are set forth in 5 U.S.C. 4507a.
2. (b)To be eligible for a rank award, a senior career employee must:
   1. (1)Hold a career appointment in a Senior-Level (SL) or Scientific-Professional (ST) position that is subject to OPM position allocations under part 319 of this chapter and paid under 5 U.S.C. 5376 on the nomination deadline set by OPM;
   2. (2)Be an employee of the agency on the nomination deadline set by OPM; and
   3. (3)Have at least 3 years of career or career-type Federal civilian service above GS-15. Service need not be continuous. Qualifying service includes appointments that are not—
      1. (i)Time-limited; or
      2. (ii)To positions that are excepted from the competitive service because of their confidential or policy-making character.
3. (c)Each agency may nominate up to 9 percent of its senior career employees for rank awards.