Even though the weight lifted may be only a negligible amount, a job should be rated Light Work: (1) when it requires walking or standing to a significant degree; or (2) when it requires sitting most of the time but entails pushing and/or pulling of arm or leg controls; and/or (3) when the job requires working at a production rate pace entailing the constant pushing and/or pulling of materials even though the weight of those materials is negligible. Procedures that enter deep tissue or body fluid, including but not limited to: Central IV insertion, placing a catheter or injecting material into the spinal canal or subdural space (myelogram, lumbar puncture, spinal/epidural anesthesia), breast biopsy, temporal artery biopsy, bone marrow biopsy, OB vaginal delivery, incision & drainage.