The University of Sheffield, UK
IZA World of Labor role
Professor of Public Policy, The University of Sheffield, UK
The magnitude and character of the informal economy and evaluating different public policy approaches and initiatives for tackling this sphere
Positions/functions as a policy advisor
Lead expert on undeclared work to the European Commission's European Platform Tackling Undeclared Work (2016–present)
Chief advisor on undeclared work to the Western Balkans Network Tackling Undeclared Work (2018–present)
Advisor to International Labour Organization on tackling the informal economy (2015–present)
Professor of Work Organisation in the School of Management at the University of Leicester, UK
Entrepreneurship in the Informal Sector: An Institutional Perspective. London: Routledge.
Entrepreneurship and Institutions: The Causes and Consequences of Institutional Asymmetry. London: Rowman & Littlefield, 2017 (with N. Williams and T. Vorley).
Measuring the Global Shadow Economy: The Prevalence of Informal Work and Labour. Cheltenham: Edward Elgar Publishing, 2016 (with F. Schneider).
Confronting the Shadow Economy: Evaluating Tax Compliance and Behaviour Policies. Cheltenham: Edward Elgar Publishing, 2014.
The Role of Informal Economies in the Post-Soviet World The End of Transition? London: Routledge, 2013 (with J. Round and P. Rodgers).
Cash wage payments in transition economies: Consequences of envelope wages Updated
Reducing under-reporting of salaries requires institutional changesIoana Alexandra HorodnicColin C. Williams, October 2021In transition economies, a significant number of companies reduce their tax and social contributions by paying their staff an official salary, described in a registered formal employment agreement, and an extra, undeclared “envelope wage,” via a verbal unwritten agreement. The consequences include a loss of government income and a lack of fair play for lawful companies. For employees, accepting under-reported wages reduces their access to credit and their social protections. Addressing this issue will help increase the quality of working conditions, strengthen trade unions, and reduce unfair competition.MoreLess