Ricardo twists his ankle at work but does not immediately realize that he is injured

Ricardo twists his ankle at work but does not immediately realize that he is injured because his ankle is not sore or swollen, and therefore he does not report the injury to his employer. the next morning, ricardo’s ankle is sore and swollen, and he realizes he has the kind of injury he is required to report to his employer. he reports the injury to the employer that day. his employer disciplines ricardo for failing to report his injury "immediately" as required by the employer’s injury reporting rules. did the employer misuse a disciplinary program against ricardo for reporting an injury?