Employee states he experienced back pain when lifting stone on Nov. 4th, thought he was OK, but then on Nov. 5th he had more pain when wrapping a pallet. Rested during the weekend and said he felt good in the Morn. on Nov. 8th, after working for a while the pain came back, he reported to manager. Employee went to provider Nov. 9th AM. Doctor told employee he has a back strain.