<prompt> Translate the following text to EnglishKwa sababu hizi, mchango wa mfanyakazi unapaswa kuwa na uainishaji sawa na michango ya wafanyikazi wasio wa Shirikisho, ambayo ni mapato yasiyo ya kubadilishana.  <response>: For these reasons, the employee contribution should have the same classification as contributions by non-Federal employees, which is nonexchange revenue. 