20 CFR § 209.3 - Social security number required.

---
identifier: "/us/cfr/t20/s209.3"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "20 CFR § 209.3 - Social security number required."
title_number: 20
title_name: "Employees' Benefits"
section_number: "209.3"
section_name: "Social security number required."
chapter_name: "RAILROAD RETIREMENT BOARD"
subchapter_number: "B"
subchapter_name: "REGULATIONS UNDER THE RAILROAD RETIREMENT ACT"
part_number: "209"
part_name: "RAILROAD EMPLOYERS' REPORTS AND RESPONSIBILITIES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "45 U.S.C. 231f."
regulatory_source: "49 FR 46729, Nov. 28, 1984, unless otherwise noted."
cfr_part: "209"
---


# 209.3 Social security number required.

Each employer shall furnish to the Board a social security number for each employee for whom any report is submitted to the Board. Employers are encouraged to validate any social security number provided under this section.

(Approved by the Office of Management and Budget under control number 3220-0008)

[63 FR 32613, June 15, 1998]