VNU Journal of Economics and Business, Vol 1, No 4 (2021) 12 23 12 Original Article Labor Productivity in Hotel Service Empirical Evidence from Vietnam Nguyen Khanh Huy1,*, Nguyen Khanh Linh2 1VNU University of Economics and Business, 144 Xuan Thuy Road, Cau Giay District, Hanoi, Vietnam 2International School Vietnam National University Hanoi, G7 & G8 Building, 144 Xuan Thuy Road, Cau Giay District, Hanoi, Vietnam Received 4 June 2021 Revised 16 July 2021; Accepted 25 December 2021 Abstract Serv[.]