Dina Hendiyani et al. 2025. ISLAMIC REWARD SYSTEM MANAGEMENT FOR WORK HAPPINESS MEDIATED BY WORK ENGAGEMENT. International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET). 4, 7 (Jun. 2025), 1108–1121. DOI:https://doi.org/10.54443/ijset.v4i7.789.