The Illinois Form 45, known as the Employer's First Report of Injury, plays a crucial role in the workers' compensation process. Employers must complete this form when an employee experiences a work-related injury or illness that results in lost workdays. Essential information is required on the form, including the employer's details, the employee's information, and specifics about the incident itself. Key sections cover the nature of the accident, the employee's job title, and the type of injury sustained. Employers must also indicate whether the accident occurred on their premises and provide details about any medical treatment received. The form must be submitted to the Illinois Workers' Compensation Commission, ensuring that all relevant parties are informed and that proper records are maintained. While it is a legal requirement to file this report for significant injuries, submitting the form does not imply liability under the Workers' Compensation Act. The information contained in the form is confidential, safeguarding the privacy of both the employer and employee.