No. Costco’s U.S. warehouses are closed on Labor Day, which falls on Monday, September 7, 2026. The company lists Labor Day among seven annual holiday closures for its warehouses, along with New Year’s Day, Easter Sunday, Memorial Day, Independence Day, Thanksgiving, and Christmas.
That full-day closure typically covers the warehouse floor and related services such as gas stations. Costco is expected to resume normal hours on Tuesday, September 8, 2026; check your local warehouse page for exact times.
Source: Costco Customer Service — What are Costco’s holiday closures?