CFR > Title 5 - Administrative Personnel > CHAPTER I—OFFICE OF PERSONNEL MANAGEMENT > SUBCHAPTER B—CIVIL SERVICE REGULATIONS (parts 110 to 990) > PART 591—ALLOWANCES AND DIFFERENTIALS > SUBPART B—Cost-of-Living Allowance and Post Differential—Nonforeign Areas (§591.201 to §591.244) > 591.232—How does OPM establish and review post differentials?

591.232—How does OPM establish and review post differentials?

(a) OPM establishes a post differential by rulemaking if Government agencies require it for recruitment purposes and if one or more of the following conditions exist:
(1) Extraordinarily difficult living conditions,
(2) Excessive physical hardship, and/or
(3) Notably unhealthful conditions.
(b) OPM periodically reviews with Federal agencies whether conditions of environment have changed in the post differential areas and whether payment of the post differential continues to be warranted as a recruitment incentive.