Employee bumped his elbow on storage tray on the roofbolter on May 1st. On May 8th during his seven days off he called in and reported the accident. He came back and worked his four days and went on days off. On May 15th employee went to the doctor and was diagnosed with bursitis. Employee went on MLOA FROM May 18TH through May 20th and had a full release to full duty on May 21st.