Abstract
This is the protocol for a Campbell systematic review. The objectives are as follows. In order to understand the variables affecting breastfeeding in working women, this systematic review will aim to determine the factors associated with early breastfeeding cessation upon women's return to work within a Social-Ecological framework. This will be achieved by answering the following questions: Which individual factors are associated with early discontinuation of breastfeeding upon returning to work?; Which interpersonal factors are associated with early discontinuation of breastfeeding upon returning to work?; Which community factors are associated with early discontinuation of breastfeeding upon returning to work?; Which institutional factors are associated with early discontinuation of breastfeeding upon returning to work?; Which public policies are associated with early discontinuation of breastfeeding upon returning to work?