Costco Teamsters pension trust extends bonus accrual rate through 2026

The Western Conference of Teamsters Pension Trust will keep Costco workers at the higher 1.6% bonus accrual rate through Dec. 31, 2026, a change that reinforces why a union pension still stands apart from a 401(k) when markets get choppy. For workers in Costco warehouses, meat and bakery departments, optical, stockrooms and driving fleets, the difference is practical: a pension is a formula-based retirement promise tied to the contract and the trust, not just to personal saving habits or the next market swing.

The trust says it approved the 2026 benefit improvement in October 2025 and is returning the bonus accrual rate to 1.2% in 2027. It also says the plan remains in the Green Zone under the Pension Protection Act, a status workers often read as a sign of relative funding health. Established in 1955 through collective bargaining, the trust says it is now the largest area-wide multiemployer pension plan in the United States, covering more than 231,000 active participants through agreements with 1,350 employers in 85 industries across 31 states.

That scale matters inside Costco because pension value is built over years of covered work, contribution rates and contract language. Teamsters have used that point repeatedly in organizing and bargaining, arguing that a pension does more than add to wages and health coverage, it creates a reliable monthly income stream that does not depend on how a worker’s account performed in a volatile year. The trust’s participant materials also make clear that benefit statements go to most active participants with valid addresses on file, and that members should keep address, beneficiary and bank-deposit records current.

Costco’s union footprint gives that retirement promise real weight. Teamsters said workers ratified the first-ever national master agreement at Costco on Oct. 21, 2022, covering more than 18,000 workers nationwide. In August 2024, workers in Norfolk, Virginia, voted overwhelmingly to join the national contract, with nearly 300 employees getting their first collective bargaining agreement. The union said the 2025 Costco national master agreement entered into on Feb. 1, 2025, runs through Jan. 31, 2028.

The contract fight has also centered on money now and money later. Teamsters said the 2025 bargaining covered more than 18,000 workers nationwide as Costco reported $7.4 billion in 2024 profits, and the broader deal included a 22% boost in pension contributions. For Costco employees weighing a high-wage job against a retirement path, the pension trust’s extension through 2026 is a reminder that the strongest part of the union model is not just pay today, but guaranteed income after the last shift ends.