[Goldman Sachs Warns U.S. Government Shutdown Could Severely Impact Economy] Goldman Sachs economist Alec Phillips warns that a U.S. government shutdown could result in the most severe economic impact in history, potentially lasting longer than the 35-day shutdown of 2018-19 and affecting more institutions. If the shutdown lasts six weeks, it is expected to reduce fourth-quarter economic growth by 1.15 percentage points, with the economy possibly not recovering until early 2026.