This review, carried out by the International Initiative for Impact Evaluation (3ie), evaluates 43 quantitative studies and 136 qualitative studies on certification schemes designed to make agricultural production socially sustainable. It finds more positive effects on intermediate incomes, such as producer prices and agricultural income from certified products, than on endpoint outcomes, such as wages or household incomes.
Based on their findings, 3ie suggest simplifying certification programmes and ensuring that they are better adapted to local contexts to maximise their impact for producers.
Access the full report via the 3ie website.