What action must employers take regarding employees who are injured on the job?

Employers are required to provide immediate medical attention to employees who are injured on the job to ensure their well-being and address any urgent health concerns. This immediate response is crucial for not only caring for the physical injuries sustained by the employee but also for complying with occupational safety and health regulations. Providing timely medical assistance can prevent further complications and demonstrates the employer's commitment to the safety and health of their workforce.

The other options, while relevant to workplace safety and injury management, do not reflect the primary obligation an employer has in the immediate aftermath of an injury. Reporting the incident to the insurance company is an important follow-up action, but it is secondary to ensuring the employee receives the necessary medical care without delay. Providing training to avoid future incidents is part of a larger safety program but does not directly address the needs of an injured employee at that moment. Lastly, not allowing the injured employee to return to work could be part of a recovery protocol, but it is essential that their medical needs are addressed first. Thus, the requirement to provide immediate medical attention places the health and safety of employees as the foremost priority.