Federal Vacancies Reform Act — Acting Officers in the Executive Branch

The Federal Vacancies Reform Act of 1998 (FVRA, 5 U.S.C. §§ 3345–3349d) is the statutory framework governing who can temporarily perform the functions of a Senate-confirmed position when that position is vacant — through resignation, death, removal, or the beginning of a new administration before a nominee is confirmed. The FVRA matters because vacancies are not rare; they are the normal state of the executive branch. At any given time during a first-year administration, hundreds of PAS positions remain unfilled, meaning career officials or designated acting officers are exercising the authorities that Congress intended for Senate-confirmed appointees. The FVRA limits who those acting officers can be, for how long, and what happens if those limits are violated — making it one of the most litigated statutes governing executive branch organization. Its 2025 relevance is particularly acute: the Trump administration's use of DOGE-affiliated personnel and the breadth of acting designations in early 2025 generated an unprecedented wave of FVRA litigation challenging the legality of agency actions taken by officers whose authority rested on contested acting designations.

Legal Authority

• 5 U.S.C. §§ 3345–3349d — Federal Vacancies Reform Act of 1998: governs who may temporarily perform the functions of a vacant Senate-confirmed position; provides three lawful pathways for acting service; limits duration to 210 days (or until the end of a confirmed nominee's Senate proceedings); voids all actions taken by unlawfully serving acting officers
• 5 U.S.C. § 3348 — Consequences of FVRA violations: any action taken by a person not authorized under the FVRA, or serving beyond the FVRA time limits, is "void" — creating the primary enforcement mechanism through litigation challenging agency actions

Key Mechanics

When a Senate-confirmed position becomes vacant, the FVRA authorizes three pathways for temporary performance. First, the first assistant to the vacant office automatically becomes the acting officer under the standard succession rule — but only if the first assistant was already Senate-confirmed or was serving in a PAS role at the time of the vacancy. Second, the President can designate any person currently serving in a Senate-confirmed position elsewhere in the government to serve as acting officer. Third, the President can designate a senior career official (GS-15 or SES-level) who has served in the agency for at least 90 days in the prior year. The acting period is limited to 210 days (or until a nomination is rejected, withdrawn, or returned), after which all actions by the person are void if they continue. The voidness consequence — that agency orders, rules, and decisions taken by an unlawfully serving acting officer have no legal effect — has driven extensive litigation over which acting designations are valid.

Organization & Structure

The FVRA applies to any "office of an Executive agency" for which "appointment is required to be made by the President, by and with the advice and consent of the Senate" (5 U.S.C. § 3345(a)) — covering all Cabinet secretaries, deputy secretaries, under secretaries, assistant secretaries, agency heads, and most presidentially appointed positions across the executive branch. It does not apply to the Federal Bureau of Investigation Director (who has a separate statutory succession provision), federal judges (who have life tenure), or officers expressly excluded by their enabling statutes.

Key Functions & Authorities

The three categories of eligible acting officers — the FVRA provides exactly three pathways for filling a PAS vacancy on an acting basis (5 U.S.C. § 3345):

1. Any Senate-confirmed officer of the United States — the President may designate any Senate-confirmed officer from anywhere in the executive branch to perform the functions of the vacant office. This is the broadest and most flexible option, allowing the President to install a trusted senior official in any acting capacity regardless of whether they have any connection to the agency. The Trump administration used this authority to designate officials across agencies to serve in acting roles at other agencies.

2. First assistant to the vacant office — the person serving as first assistant (typically the deputy or principal deputy) automatically performs the functions of the office unless the President designates someone else. Many agencies designate their "first assistant" through regulation or agency order; the identity of the first assistant is sometimes contested when agencies have not clearly designated successors.

3. Senior agency officials designated by the President — the President may designate any officer or employee of the agency who: (a) has been with the agency for at least 90 days in the preceding 365 days; (b) is compensated at the GS-15 level or higher; and (c) is not a recess appointee. This category allows the President to install career officials (or Schedule C political appointees) in acting capacities without Senate confirmation.

The 210-day limit — an acting officer can serve for a maximum of 210 days from the date the vacancy occurred (5 U.S.C. § 3346). The clock resets (an additional 210 days) if the President submits a nominee to the Senate; if that nominee is rejected, withdrawn, or returned by the Senate, the acting officer may continue for an additional 210 days from that date. The FVRA thus gives the executive branch approximately 7 months to fill vacancies, with additional time if a nomination is in process. After the 210-day limit expires, the agency officer who would have performed the duties under the agency's own succession order (absent the FVRA) steps in — typically a career official.

Consequences of FVRA violations — any action taken by a person serving as acting officer in violation of the FVRA is "void" under 5 U.S.C. § 3348. Courts have interpreted this to mean actions are void ab initio (from the beginning), not merely voidable — a potentially significant remedy when regulations, enforcement actions, or policy decisions are made by an officer serving without valid FVRA authority. GAO and courts have invalidated agency actions on FVRA grounds, though courts have sometimes disagreed on whether challenger plaintiffs have standing to raise FVRA arguments.

FVRA exclusivity — the FVRA replaced the prior statutory framework (31 U.S.C. § 1) and is meant to be the exclusive mechanism for acting service in PAS positions. Agencies cannot use organic succession statutes or administrative orders to circumvent the FVRA's categories and time limits; if an acting designation falls outside the three categories, it is invalid regardless of how it was structured.

Interaction with the Appointments Clause — beyond the FVRA's statutory requirements, acting officer designations also face constitutional scrutiny under the Appointments Clause (Art. II § 2, cl. 2). The Supreme Court held in NLRB v. SW General, Inc. (2017) that a person who had been nominated for a PAS position could not simultaneously serve as acting officer under the first-assistant category while their nomination was pending — a significant limitation on how administrations had used acting designations to avoid Senate scrutiny of controversial nominees.

How It Affects You

If you are a citizen or voter: When you see news about an agency being run by an "acting" director, the FVRA governs whether that person has valid authority to make the decisions they're making. Acting officers have full legal authority to act within the FVRA's limits; an invalid acting designation can retroactively void rules, enforcement actions, or official decisions — potentially affecting you if those actions affected your rights or benefits.

If you are a business or regulated entity: If a regulatory agency is being led by an acting official, that official's authority to issue rules, enforcement orders, or guidance is subject to FVRA challenge. Companies in enforcement proceedings have raised FVRA arguments to challenge the validity of agency actions taken by improperly designated acting officers. For companies in heavily regulated industries (banking, securities, environmental, pharmaceutical), tracking the validity of acting designations at key agencies is a routine element of regulatory due diligence.

If you work at a federal agency: Understanding the FVRA's categories and time limits is essential for anyone in an agency that is or might be operating under an acting head. The first assistant's automatic succession means that career officials in deputy roles may suddenly acquire acting authority. Agencies are required to notify Congress within 3 days of a covered vacancy; failing to do so can create additional legal exposure. Senior career officials in policy positions should understand whether their agency's succession order complies with FVRA requirements.

If you are a journalist, researcher, or policy analyst: GAO's legal decisions on FVRA questions (published on the GAO website) are the most systematic public analysis of acting officer eligibility questions. Court decisions challenging acting officer designations provide the litigation record. The Partnership for Public Service's Appointee Tracker and the Plum Book provide the best public mapping of acting vs. confirmed officer status across the government at any given time.

Recent Developments

• 2025 — The Trump administration's early 2025 personnel actions generated extensive FVRA litigation; challenges were filed in multiple courts contesting the authority of DOGE-affiliated officials, the validity of mass firing and rehiring actions taken by acting officers, and whether specific acting designations met the FVRA's eligibility requirements; circuit courts produced conflicting rulings on standing and merits.
• 2025 — The administration's January 2025 firing of 17 Senate-confirmed Inspectors General intersected with FVRA questions: some IGs' successors were designated under FVRA authority, others had their functions absorbed by senior career officials, and the acting-IG arrangements were subject to both FVRA and the Inspector General Act's separate succession provisions.
• 2017 — NLRB v. SW General, Inc. — the Supreme Court ruled 6–2 that an individual nominated for a PAS position cannot simultaneously serve as acting officer under the "first assistant" category during the pendency of their nomination, rejecting the Obama administration's position and significantly limiting the President's ability to use pending nominations to extend acting service.
• 2018 — The Trump administration's designation of Matthew Whitaker as Acting Attorney General without Senate confirmation — under the first category (Presidential designation of any senior agency official) rather than the traditional Deputy AG succession — generated significant FVRA litigation; courts ultimately held the designation was valid, but the episode highlighted the breadth of presidential discretion under the first category.
• 1998 — Congress enacted the FVRA to replace the general vacancy statute (31 U.S.C. § 1), which courts had interpreted to allow agencies to use their own succession statutes to circumvent the general vacancy rules; the FVRA was designed to establish Congress as the rulemaker for acting service and limit executive manipulation of acting designations to avoid Senate confirmation.