Combined Federal Campaign (CFC) is the payroll deduction plan for charity that is used by all federal workers. Every federal employee selects a charity from a large list to which he/she wants their donation to go to. If you are (or if you know) a federal worker, we hope that you’ll choose, or ask the worker to choose, CDF. CDF is listed in the Health and Medical Research Charities section of the CFC catalog – Celiac Disease Foundation # 12140 . CDF appreciates your support!!