The primary objective of the present prospective randomized controlled trial is to investigate if the FES therapy would generate similar level of the improvement in hand function in chronic C4 to C7 incomplete and complete SCI individuals as compared to conventional occupational therapy. For the purpose of this study individuals with chronic SCI are those who sustained injury at least 24 months prior to enrolling in the study. The FES or conventional occupational therapy will be administered thrice-weekly for 13 weeks (i.e., 39 sessions in total) to 60 individuals with SCI. Half of the participants will receive the FES therapy and the other half will receive conventional occupational therapy of equal intensity. The secondary objectives are to evaluate if the improvements in hand function will improve participants' activities of daily living skills and their satisfaction with life.