THE EMPLOYEE WORKED ON REPLACING FILTER BAGS ON A DUST COLLECTOR & MEASURING RAW MATERIAL PILES ALL DAY, BUT HE NEVER INDICATED THAT THERE WAS A PROBLEM. LATER THAT EVENING AFTER WORK, HIS WIFE CALLED HIS SUPERVISOR TO NOTIFY HIM THAT HE WOULD NOT BE IN THE NEXT DAY, BECAUSE HE WAS AT THE HOSPITAL BEING TREATED FOR DEHYDRATION. HE MISSED THE NEXT DAY & RETURNED THE DAY AFTER THAT.