The national agreements between the U.S. Postal Service and two of its unions give the Postal Service greater flexibility to use non-career employees for clerk and mail handler duties. The Postal Service pressed for the new employee categories in its separate labor negotiations with the American Postal Workers Union (APWU) and the National Mail Handlers Union, because it wanted greater workforce flexibility in scheduling and aligning employees with the work available.
No pain no gain. The U.S. Postal Service has reduced spending over the past decade but it has come with a downside, notably a reduction in service. Over the past decade the Postal Service has reduced labor costs by $10 billion, improved productivity, and generally reined in spending.