What a Government Shutdown Actually Changes

Every few years the phrase returns to the top of the news, usually without anyone explaining the mechanics. A government shutdown is narrower than it sounds and more disruptive than the headline number of "non-essential" staff suggests. Here is what actually happens.

The mechanism

Federal agencies can only spend money Congress has appropriated. When the funding period ends without new appropriations or a stopgap measure, the legal authority to spend lapses — and a nineteenth-century statute, the Antideficiency Act, makes it illegal for agencies to incur obligations without that authority.

So a shutdown is not a decision to close the government. It is the automatic consequence of a missed deadline, and agencies have no discretion about it.

What keeps running

Quite a lot, for two reasons.

Activities funded another way

Programmes that do not depend on annual appropriations continue. Social Security and Medicare benefits keep being paid because they are mandatory spending. The Postal Service runs on its own revenue. Anything already funded through a separate multi-year appropriation continues until that money runs out.

"Excepted" work

Activities necessary for the safety of life or the protection of property continue, with staff working without pay until funding returns. That covers air traffic control, border protection, federal law enforcement, active-duty military, hospital care at veterans' facilities and prison operations.

What stops

• National parks and museums — the most visible closures, though some sites stay partially accessible without services
• Routine processing — permits, some visa and passport services, loan applications, new enrolments in certain programmes
• Federal research — labs pause, which can mean losing experiments and time-sensitive data outright
• Economic data — statistical releases are delayed, which ripples out to markets and to the Federal Reserve
• Inspections and audits — food safety, workplace and environmental inspection programmes slow sharply
• Small business lending and contracting — approvals stop, and private contractors lose work they are not later reimbursed for

The costs that are easy to miss

Back pay means the wage bill is eventually paid in full — for work that, in the furloughed case, was never done. Add the administrative cost of shutting down and starting up again, delayed revenue collection, lost park and tourism income, and contractor claims. Analyses of past shutdowns have generally found a net loss to the economy, with a portion never recovered.

How they end

Only one way: Congress passes a funding measure and the President signs it. That can be a full appropriations package, or more often a continuing resolution that extends the previous funding level for a set period and moves the deadline.

Partial shutdowns are possible too, where some appropriations bills have passed and others have not — in which case only the unfunded agencies are affected.

If you are directly affected

Check the specific agency's contingency plan, which each one publishes and which states exactly which functions continue. Those documents are far more reliable than general news coverage, because they are the operating instructions the agency actually follows. The Office of Management and Budget collects them.