Book excerpt: Social Work and Social Welfare: An Invitation is a nationally recognized, best-selling text and unique website for US Introductory Social Work and Social Welfare courses. It provides students with the knowledge, skills, and values that are essential for working with individuals, families, groups, organizations, communities, and public policy in a variety of practice settings. This new third edition is an up-to-date profile of the world in which today’s social workers practice, with current demographic, statistical, legislative, policy, and research information; sensitive discussions of contemporary ethical issues; and new first-person narratives from social workers in a variety of fields. The call to become engaged in some of society’s most challenging issues is clearer than in previous editions.