Mahmood, Y., Raewf, M. and AL- Hamadany, Z. 2019. A Study on the Perceptual Relationship between Overtime and Output. Cihan University-Erbil Journal of Humanities and Social Sciences. 3, 1 (Jun. 2019), 27-31. DOI:https://doi.org/10.24086/cuejhss.v3n1y2019.pp27-31.