such roles are unadvertised to maintain stakeholder confidence and to overcome internal uncertainties. Staffing types Contract, contract-to-hire, temporary, part-time, full-time, GAP staffing (graphic arts professional). See also Bundesagentur für Arbeit, German federal employment agency Contingent workforce Hiring hall Human resource management Olsen v. Nebraska, a US legal case concerning compensation issues with private employment agencies Payrolling Personnel selection Professional employer organization Recruitment Talent agent Temporary work UK agency worker law References Further reading DE Balducchi, RW Eberts, CJ O'Leary (eds), Labour Exchange Policy in the United States (W.E. Upjohn Institute for Employment Research 2004) P Craig, M Freedland, C Jacqueson and N Kountouris, Public Employment Services and European Law (2007) International Labour Office, The role of private employment agencies in the functioning of labour markets (Report VI 1994) International Labour Conference 81st Session R Kellogg, The United States Employment Service (University of Chicago Press 1933) T Martinez, The Human Marketplace: An Examination of Private Employment Agencies (Transaction 1976) JB Seymour, The British Employment Exchange (PS King & Son 1928) Recruitment Public employment service