WHEN EMPLOYEE REPORTED TO WORK ON 1/21/03 HE HAD A NOTICEABLY STIFF SHOULDER. HE STATED THAT WHEN HE GOT OFF WORK ON 1/20 IT JUST STARTED HURTING AND THAT HE THOUGHT IT WAS WORK RELATED. HE WA S TRANSPORTED TO SEE MEDICAL TREATMENT AT WHICH POINT HE WAS PLACED ON RESTRICTED DUTY PENDING FURTHER MEDICAL ATTENTION.