https://www.wired.com/story/why-amazon-really-raised-minimum-wage/ – useful article for discussion around the effects of minimum wage and where to find the relevant section within the specification:-
Edexcel spec reference 3.5.3 maximum and minimum wages
AQA spec reference 4.1.6.6 The effects of a minimum wage upon labour markets
OCR spec reference P13 Evaluate, with the aid of a diagram, the impact of the imposition of and changes minimum wages