This item was merged with RIN 3046-AA76, which will be the RIN used to identify the Final Rule. On March 31, 2008, the EEOC published a Notice of Proposed Rulemaking (NPRM) concerning the disparate impact burden of proof under the Age Discrimination in Employment Act. 73 FR 16807 (March 31, 2008). In addition to requesting public comment on the proposed rule, the Commission asked whether regulations should provide more information on the meaning of "reasonable factors other than age" (RFOA) and, if so, what the regulations should say. After consideration of the public comments, and in light of the Supreme Court decisions in Smith v. City of Jackson, 544 U.S. 228 (2005), and Meacham v. Knolls Atomic Power Lab., 554 U.S. 84, 128 S. Ct. 2395 (2008), the Commission issued this NPRM to address the scope of the RFOA defense. Accordingly, before finalizing its regulations concerning disparate impact burden of proof under the ADEA, the Commission will conduct this rulemaking to amend its regulations concerning RFOA. A Final Rule will cover the issues addressed in both NPRMs.