An empirical investigation of the effects of HIV/AIDS and life expectancy on labour productivity in Nigeria was carried out in this paper by employing Cointegration test, Granger causality test and Ordinary Least Square techniques, using the data of annual time series for the period 1980-2013. The findings reveal the existence of 3 cointegrating vectors which show a long-run relationship among the variables in the series used. The Granger causality test shows that there is a bi-directional causality between LE and LP, and between LE and HIV, but uni-directional causality between HIV and LP.
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