Unilever produces about 12 per cent of the world’s black tea. This makes it a good place to start implementing Rainforest Alliance certification for sustainable farming, says Miguel Veiga-Pestana, vice president for global external affairs…The aim is to be fully compliant in tea by 2015, then move on to palm oil. Organisations such as the Rainforest Alliance, Ethical Trading Initiative (ETI) and Fairtrade, include working conditions in their certification standards. But even a company as big as Unilever struggles to meet these…Lack of awareness among senior managers, and the “casualisation” of the workforce, are among the biggest problems…The food industry is under increased pressure to take responsibility for supply chains…ETI estimates 9m workers are covered by its 50 corporate members which include Tesco, Asda [part of Walmart] and Sainsbury’s. The Rainforest Alliance has…Kraft, Nestlé and Sara Lee [also refers to Mars]