Which document must an employee provide to work as a security officer?

To work as a security officer, it is essential for an employee to provide a valid photo ID and proof of training completion. This requirement is in place to ensure that security officers are properly trained and authorized to perform their duties effectively. The valid photo ID serves as a means of identifying the individual and verifying their legal ability to work, while proof of training completion confirms that they have received the necessary education and skills required for the role.

In the context of security work, training covers various aspects, including understanding legal responsibilities, conflict de-escalation, emergency response procedures, and how to manage and secure property. Having proof of this training is crucial for both the safety of the officer and the public they serve.

Other documents, such as a social security card, a driver's license, or proof of prior security employment, may be relevant for different purposes, such as tax compliance or showing past experience. However, they do not encompass the specific requirements necessary to ensure an individual is fit for the responsibilities inherent to a security officer role. Thus, the combination of a valid photo ID and proof of training completion is the correct answer to this question.