According to the National Association of Postmasters of the US (NAPUS)

VERA:  The latest figures of EAS employees taking the VER are stated:
    Supervisor Customer Services-374
    Supervisor Distribution Operations-96
    Other Field EAS-581
    Postmasters-928
    HQ/HQ-related employees-190

The VER effective date is Tuesday, March 31, 2009.

PR note: If I recall correctly over 1500 Postmasters accepted the early retirement offer in 2003?