Working Group I

• 2004 to present: Procurement
• 2001-2003: Privately financed infrastructure projects
• 1969-1971: Time-limits and limitation (prescription)

Working Group II

• 2000 to present: Arbitration and conciliation
• 1981-2000: International contract practices
• 1968-1978: International sale of goods

Working Group III

• 2010 to present: Online dispute resolution
• 2002-2008: Transport law
• 1970-1975: International legislation on shipping

Working Group IV

• 1997 to present: Electronic commerce
• 1992-1996: Electronic data interchange
• 1988-1992: International payments
• 1973-1987: International negotiable instruments

Working Group V

• 2001 to present: Insolvency law
• 2000: International contract practices
• 1995-1999: Insolvency law
• 1981-1994: New international economic order

Working Group VI

• 2002 to present: Security interests