The book "Relationship Between Unemployment and Economic Growth in Nigeria" tries to explain the interactions between these two important concepts unemployment and economic growth especially as it is in Nigeria and in the world, using the Okun`s Law as the theoretical foundation. In order to achieve this, recent literature were reviewed. Also, time series data were used to empirically ascertain the nature of these interactions; ranging from the short-run impacts (OLS), direction of causality (Granger causality), long run relationship (Jansen Co integration) and then the error correction mechanism (ECM). The interesting thing about the ECM is that it was computed using the generalized linear model (GLM). This work will expose readers to latest techniques used in analyzing time series data as well as make them conversant with applied econometrics.