While some former Price Club locations in California and the northeastern United States are staffed by Teamsters,[48] the majority of Costco locations are not unionized. The non-union locations have revisions to their
Costco Employee Agreement every three years concurrent with union contract ratifications in locations with collective bargaining agreements. Similar to a union contract, the Employee Agreement sets forth such things as benefits, compensations, wages, disciplinary procedures, paid holidays, bonuses, and seniority. As of March 2011, non-supervisory hourly wages ranged from $11.00 to $21.00 in the United States, $11.00 to $22.15 in Canada, and £6.28 to £10.00 in the United Kingdom. In the US, eighty-five percent of Costco's workers have health insurance, compared with less than fifty percent at Walmart and Target.[49]
Product-demonstration (e.g., food samples) employees work for an outside company. In the western U.S., the company is called Warehouse Demo Services, Kirkland, Washington.[50] Costco also uses Club Demonstration Services, based in San Diego, California.[51] In Canada, demonstrations are done exclusively by Professional Warehouse Demonstrations.