What must employees present to qualify for EI sickness benefits?

To qualify for Employment Insurance (EI) sickness benefits, employees must provide medical documentation. This documentation is critical as it serves as proof of the individual's inability to work due to illness or injury. The medical documentation typically includes a certificate or a note from a healthcare professional that outlines the condition and confirms that the employee is unable to fulfill work obligations. This requirement helps ensure that benefits are provided to those who genuinely need them due to health-related issues.

The other options do not meet the criteria necessary for qualifying for EI sickness benefits. A work-related injury report would be relevant for workers' compensation but not specifically for EI sickness benefits. A letter from a supervisor does not substantiate the medical need for sick leave, and a note from a family member would not suffice since formal medical documentation from a licensed professional is required for such benefits.