You should visit the International Labour Organisation (ILO) website where you will find many documents about global international labour standards. Most of the literature refers to this as 'decent work', so if you searxch for this term, you will find what you want. In June 2015, the 150+ member countries of the United Nations signed an ILO agreement on 'decent work' and tackling the informal economy, which sets out well most of the issues you will wish to discuss. I attach some articles based on ILO data which examine the existence of what you might term 'non-decent work'.