who's afraid of the informal economy?

An interesting fact, courtesy of The Malaysian Insider: "The type of work available has increasingly been in the informal sector, with menial or temporary jobs on offer. Currently, 70 per cent of Indonesian workers — or 71 million people — work as drivers, food-sellers, labourers and small traders, among others."

If 70 percent of the people work informally, doesn't that make the informal economy the economy of full employment? And if so, why not work with the informal to make these jobs more plentiful and more permanent?