We examine the impact of labour and product market reforms on economic growth in 25 OECD countries between 1985 and 2013, and tests whether this impact is conditioned by the fiscal policy stance. Our local projection results suggest that controlling for endogeneity of reforms (by the Augmented Inverse Probability Weighted estimator) and fiscal policy is crucial. Our results show that product market reforms mostly cause slight negative growth, except when implemented during periods of neutral fiscal policy. Labour market reforms hurt growth under tight and neutral fiscal policy, but are conducive to economic growth if introduced during periods of expansionary fiscal policy.