The Worker Solidarity and Defense Foundation (EIN: 99-4546917) is a nonprofit organization dedicated to raising and distributing charitable funds to workers who have lost income due to employer retaliation for asserting their rights at work. With an operating budget of $73.1K and total revenue of $595.3K for the filing year 2025, the foundation relies on multiple funders, none of which contribute more than 50% of its revenue. More information about their mission and initiatives can be found on their website at https://workerfoundation.org.