Social workers in the field of policy practice analyze and assess the effectiveness of existing and proposed programs in order to ensure that these programs are meeting the needs of clients. By molding these programs, policy practice professionals influence the welfare of many who utilize social programs. They identify needs, conduct research to find effective ways to combat problems, and propose policies that have wide reaching effects. From education, to violence, to homelessness, to abuse, to mental illness, to health care, to adoption, and addictions; social workers involved with policy affect every aspect of humanity. Social workers may also form coalitions, develop networks of supporters, and lobby for current legislation.