Government Customer Service Improvement Act of 2012

Government Customer Service Improvement Act of 2012 - Directs the Director of the Office of Management and Budget (OMB) to: (1) develop performance measures to determine whether federal agencies are providing high-quality, timely, customer service and improving delivery service, (2) develop customer service and service delivery standards for such agencies, and (3) include achievements in meeting such performance measures and standards in agency performance updates.

Requires the head of each federal agency to designate an agency employee to be its service improvement officer, who shall issue guidelines to implement customer service standards and publish customer service contact information.

Directs the OMB Deputy Director of Management to establish a two-year Service Improvement Unit Pilot Program to provide assistance to agencies that do not meet such customer service standards and performance measures.

Requires the Director of the Office of Personnel Management (OPM) to: (1) report to Congress and the Comptroller General (GAO) on information submitted by each federal agency on its employees who are retiring, and (2) establish a timetable for the completion of its retirement systems modernization project.