How to Use the Summary of Changes Find the chapter, subchapter, part, section, or system of records in the first column and read across the other columns to find specific information about that revision.   This chapter, subchapter, part, or section… titled… was revised to… in Postal Bulletin issue number… with an issue date of … Chapter 4, Pay Administration 411.31 Assignment of Positions Clarify the standard and to update the name of the organization from Compensation and Benefits to Compensation Programs. 22590 1-27-22 412.12 New Career Appointment Modify pay policies and schedules for nonbargaining unit employees. 22590 1-27-22 413.21 Nonbargaining Unit Employees Modify pay policies and schedules for nonbargaining unit employees. 22590 1-27-22 413.3 Position Upgrade Modify pay policies and schedules for nonbargaining unit employees. 22590 1-27-22 434.411 Holidays Observed Add Juneteenth National Independence Day (June 19) as a federal holiday to be observed by the Postal Service. 22591 2-10-22 Chapter 5, Employee Benefits 518.1 Observed Holidays Add Juneteenth National Independence Day (June 19) as a federal holiday to be observed by the Postal Service. 22591 2-10-22 Chapter 6, Employee Relations 662.11 Ethics Advice Clarify the standard related to ethics advice for applying ethics regulations to particular situations. 22590 1-27-22