Management Instruction FM-640-2023-1 - Postal Bulletin 22663 - Contents Handbooks Handbook EL-312 Revision: Chapter 1, “General” Effective in 2025, the Postal Service™ will revise Handbook EL-312, Employmen..." /> Management Instruction FM-640-2023-1 - Postal Bulletin 22663 - Contents Handbooks Handbook EL-312 Revision: Chapter 1, “General” Effective in 2025, the Postal Service™ will revise Handbook EL-312, Employmen..." />