January-March Salary Back Payment and...

Mengapa diterjemahkan begitu?
Berkaca dari kasus nyata berikut:
https://www.bakermckenzie.com/-/media/files/insight/publicat...
China Employment Law Update
After the employee’s employment contract expired on November 29, 2012, the company stopped her pay and social insurance enrolment, which led to the employee bringing a claim for salary back payments and medical
expenses reimbursement.

https://www.vta.vic.edu.au/docman-sortable-list/104-act-cit-...
Teachers' Enterprise Agreement 2009 - 2011
A teacher's increment will be deferred whilst the Professional Improvement Plan is in progress. Where the teacher is found to meet the required standard of professional performance, the increment date will be reinstated and a salary back payment made if necessary.

Pada kasus pertama, dituntut rapel gaji utuh, sementara pada kasus kedua, diberikan rapel selisih gaji (antara sebelum dan sesudah kenaikan).

Bagaimana kalau back pay salary?
Per investopedia (https://www.investopedia.com/terms/b/back-pay.asp ), isitlah ini lebih tepat untuk rapel gaji setelah hubungan kerja berakhir,