EE SLIPPED ON SOME SLIPPERY STEPS EXITING THE PORTS TRAILER AT THE BIG PLANT. HE HAD A PREEXISTING BACK AILMENT PRIOR TO THE FALL THAT IMPAIREDHIS ABILITY TO WALK CONFIDENTLY THE FALL RESULTE D IN WORK LOSS & RESTRICTED DUTY. THE INJURIES AQUIRED FROM THE FALL WERE BACK SPASMS & CHRONICBACK PAIN