Young people face unique challenges to using their voice in the workplace as they embark on careers. They need support and structure to empower them in that process. An array of organizations serving young people are uniquely positioned to be allies to youth worker voice, including youth development groups, nonprofits specializing in job training and placement, social enterprises that directly employ and place young workers, as well as workforce organizations that partner with training programs. With expert input from 27 leaders in this space, we assembled this toolkit to guide youth-serving organizations on how to listen to and support youth voice within their own organizations, build youth skills to advocate for themselves at work, encourage employer partners to make space for youth voice, and elevate youth worker voice in community and policy conversations.