Neither the Workers’ Compensation Act nor the Americans with Disabilities Act requires that an employer create a light-duty job for someone even if that person was injured at work.
However, if the employer has provided these light-duty jobs to other employees who have doctor’s limitations, the employer must do the same for those people on workers’ comp. If the employer refuses, you can sue the employer for retaliatory discharge.
Remember that the Workers’ Compensation Act provides for disability pay, retraining for another job, medical expenses, and other damages for those hurt on the job. You probably should speak with an experienced workers’ comp attorney, though, to make sure your rights are fully protected.