The Support Through Loss Act provides paid leave protections for workers dealing with pregnancy loss and related reproductive health challenges. The bill requires employers with five or more employees to grant workers at least 56 hours of paid leave annually that can be used for absences caused by miscarriage, unsuccessful fertility treatments, failed adoptions or surrogacies, or diagnoses affecting pregnancy or fertility. Employees can also use this leave to care for partners experiencing these circumstances. The law applies to private employers, federal employees, state employees, and congressional staff, and prohibits employers from firing, discriminating against, or penalizing workers for taking this leave. The bill also authorizes research funding and public education initiatives through the Centers for Disease Control and Prevention and the National Institutes of Health, allocating $45 million annually from 2023 through 2026 for pregnancy loss research and requiring healthcare worker training on related issues. Enforcement falls to the Department of Labor, which can investigate violations and employees can file lawsuits to recover lost wages and other damages.