Apax Partners, one of Europe's largest private equity firms, is facing questions from its investors after a company it owns, German retailer Takko Holding, was found to have used a garment factory in Myanmar that employed underage workers.

The findings were outlined in a February report by Dutch independent, not-for-profit organisation the Centre for Research on Multinational Corporations, otherwise known as SOMO. The report said several factories in Myanmar had unsafe and unhealthy working conditions, paid low wages, or enforced long working hours, as well as employing workers below the legal working age.