Job Description California applicants: Please click here to review the Costco Applicant Privacy Notice. The jobs listed are examples of the typical kinds of positions that Costco may hire for when openings exist. The listing does not mean that any positions are currently open or available at Costco. Position Summary Protects company assets from internal and external theft. Reviews individual warehouse inventory numbers and assists in creating / executing a plan of action to reduce shrink. Is familiar with various facets of operation that contribute to shrink and participates in instruction and training with affected employees. Observes and reports potential safety and security hazards. Investigates, detains suspects, completes reports, cooperates with local law enforcement, and testifies in court if necessary. Reports directly to the Warehouse Manager. Provides a high level of member service. Job Duties • Walks the warehouse and perimeter up to 8 hours a day to monitor safety and security concerns. Pushes cart with merchandise and returns items to the floor. Maintains anonymity by shopping amongst members. • Follows and maintains knowledge of Costco procedures and applicable laws in performance of duties. Attends meetings and seminars regarding loss prevention. • Observes, detects, and investigates internal and external theft threats as well as safety concerns. Retrieves stolen items which shoplifters have concealed; may need to move product to access stolen items. • Detains and interviews shoplifters when warranted. Reports potential internal theft situations to the warehouse manager. • Prepares reports for internal use and for potential prosecution. Enters cases into case management system Nettrack. • Maintains evidence collected and reports files from investigations. • Testifies in court concerning theft investigations. • Communicates with other area Costco Loss Prevention Clerks and Security people of area businesses to exchange information about current, local theft threats. • Ensures proper cleanup and disposal of hazardous materials. • Ability to operate vehicles, equipment or machinery. • Assists with department duties as necessary. • Assists in other departments of the warehouse as necessary. For additional information about pay ranges, click here. We offer a comprehensive package of benefits including paid time off, health benefits - medical/dental/vision/hearing aid/pharmacy/behavioral health/employee assistance, health care reimbursement account, dependent care assistance plan, short-term disability and long-term disability insurance, AD&D insurance, life insurance, 401(k), stock purchase plan to eligible employees. Apart from any religious or disability considerations, open availability is needed to meet the needs of the business. If hired, you will be required to provide proof of authorization to work in the United States. Job Description Posting Updated: July 2026 Job Code: 0540