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Research background: Output volatility has potentially adverse consequences on the economy and the stabilizing role of fiscal policy is linked to the share of government size in an economy. Hence, given the relative large share of government in developing countries, government size is expected to play an important role in stabilizing output volatility. Purpose: This study examines the relationship between output volatility and government size in Nigeria. The study seeks to establish if government size mitigates output volatility in Nigeria. Research methodology: The study employs the Autoregressive Distributed Lag (ARDL) technique after conducting stationarity and co-integration tests. Results: The results of the ARDL estimate showed that government size lessens output volatility but the magnitude was insignificant. Further, the study found that volatility in aggregate government spending; international oil price and public debt were significant determinants of output volatility in Nigeria. Novelty: This showed that the automatic stabilization role of government size on output volatility could not be established. The automatic stabilization role of fiscal policy can be improved by increasing social security transfers (pension payment), payments of unemployment benefits and increasing civil servants minimum wage.

Research background: Although a number of studies have been conducted on the relationship between public expenditure and economic growth, it is difficult to tell with certainty whether or not an increase in public expenditure is good for economic growth. This lack of consensus on the results of the previous empirical findings makes this study of paramount importance as we take stock of the available empirical evidence from the 1980s to date. Purpose: In this paper, theoretical and empirical literature on the relationship between government expenditure and economic growth has been reviewed in detail. Focus was placed on the review of literature that assessed the impact of government spending on economic growth. Research Methodology: This study grouped studies on the impact of public expenditure on economic growth based on their results. Three groups emerged – positive impact, negative impact and no impact. This was followed by a review of each relevant study and an evaluation of which outcome was more prevalent among the existing studies on the subject. Results: The literature reviewed has shown that the impact of government spending on economic growth is not clear cut. It varies from positive to negative; with some studies even finding no impact. Although the impact of government spending on economic growth was found to be inconclusive, the scale tilts towards a positive impact. Novelty: The study provides an insight into the relationship between public expenditure and economic growth based on a comprehensive review of previous empirical evidence across various countries since the 1980s.