Background: This is a protocol for a Campbell Review. The objectives are as follows: Objectives: This review systematically collects and synthesizes evidence from evaluations of causal effects of interventions designed to improve employment outcomes for non-Western immigrants. The review aims to answer the following questions: 1) Do interventions designed to improve the economic self-sufficiency for non-Western immigrants affect participants employment, use of cash assistance, income, or job retention? 2) Do effects differ depending on programme content or populations served? 1 | BACKGROUND 1.1 | Description of the condition In 2015 permanent migration to the OECD countries reached its' highest level since 2007 with 4.7 million entries-partially due to the surge in refugees during recent years (OECD, 2017a). Immigrants can be refugees, displaced persons, economic migrants and persons moving for other purposes, including family re