See how Fairfax County uses Fillout forms to increase operational efficiencies and save staff time through automation. A parent or person with legal custody of a child can file a petition for Child Support in Domestic Relations.Learn how to apply for food, medical, financial, and energy assistance programs and how to access our wide range of employment services for people of all ages. Help fill out forms programs and help in Fairfax, va. Search 63 social services programs to assist you. Apply online using the link below. MyChildSupport Customer Service Portal. Out-of-School Support (OSS) consists of homebound instruction, home-based instruction, and temporary academic support. Reducing Your Child Support Payments Virginia Dept. For more information or to schedule a consultation with our Fairfax child support attorneys, call or fill out our online form.