Length of details
Primary source
Verbatim text below is from the Electronic Code of Federal Regulations (eCFR), a public-domain U.S. government work. Always verify the current version with the eCFR before relying on it for any legal matter.
Full Text
The total length of a detail or several details combined must not exceed 5 consecutive years, except that when the Secretary of State, on the recommendation of the head of the agency, determines it to be in the national interest, the 5 years allowed for details may be extended for up to an additional 3 years. A detail or combination of details and transfers must not exceed 8 years in the aggregate throughout an employee's Federal career.
[73 FR 64860, Oct. 31, 2008]
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.