Abraham Cheng commenced to practice law in 1999. He concurrently acts as a director of Mega International Commercial Bank, and a volunteer lawyer of the Federation for the Welfare of the Elderly. His practice fields including but not limited to corporate establishment and registration, foreign investment, mergers and acquisitions, financial laws, medical and health care, employment relationship, general corporate matters, commercial litigation and dispute resolution. He also established Taiwan Kang-Ning Social Welfare Association with a view to providing services related to the elderly guardianship, property trust and property security.