GPO's Operating Status Hotline: 202.512.1810
A real time look at the current operating status for Federal Government offices in the Washington, DC area.

https://www.opm.gov/policy-data-oversight/snow-dismissal-procedures/current-status/
Use webTA to certify and submit your timecard, request leave, or donate leave.

http://webta.gpo.gov
Employee self-service and access to payroll history.

https://www.nfc.usda.gov/EPPS
Your Official Personnel File (OPF) contains human resource records and documents related to your federal civilian service. https://eopf.nbc.gov/opm/
Enroll in a flexible spending account through FSAFEDS to get reimbursed for your qualifying out-of-pocket health care and dependent care expenses.

https://www.fsafeds.com/GEM
The Thrift Savings Plan (TSP) is a retirement savings and investment plan for federal employees and members of the uniformed services.

https://www.tsp.gov/index.html