1. Abraham K, Houseman S (2019) Making ends meet: the role of informal work in supplementing Americans’ income. Russell Sage Found J Soc Sci 5(5):110–131
2. Addati L, Cassirer N, Gilchrist K (2014) Maternity and paternity at work: law and practice across the world. International Labour Office, Geneva
3. Addison JT, Teixeira P (2003) The economics of employment protection. J Labor Res 24:85–129
4. Amengual M, Distelhorst G (2020) Cooperation and punishment in regulating labor standards: evidence from the Gap Inc. supply chain. University of Toronto, Centre for Industrial Relations and Human Resources Working Paper
5. Anderson J, Wassmer R (2000) Bidding for business. Upjohn Institute for Employment Research, Kalamazoo