On 1/19/15 a supervisor reported while driving a pickup he hit some known bumps and bottomed out, and he alleged he experienced lower back pain. He went to his PCP 1/21/15, was given a full release to work. Employee then notified company he needed off due to personal health issues. On 4/22/15, company was notified employee alleges he's been off since 2/5/15 due to back injury.