Some 15,600 U.S. Postal Service managers. supervisors and postmasters are getting notice this week that they qualify for the mail carrier’s latest early retirement  offer. The offer applies to eligible field employees covered by the Executive and Administrative Schedule, USPS spokeswoman Patricia Licata said in reply to emailed questions from Federal Times. That figure (15,580, to be exact) represents about one-third of the 42,239 field EAS employees on the rolls as of last week. For the Postal Service as a whole, the ranks of the EAS workforce numbered 50,346, excluding the USPS inspector general’s office and the Postal Inspection Service.…