Employee returned to work after his normal 2 days off. About 9:00 pm he first complained of general pain & exhaustion. His team leader told him to rest for a few minutes & consume some water. At 10:30 pm he complained about pain & exhaustion & was told to go home. At 10:45 pm he collapsed & 911 was called. Paramedics transported him to the hospital at 11:05 pm.