There has been a failure to ensure that economic growth is inclusive and Organization for Economic Co-operation and Development (OECD) countries should focus on job creation and maintaining public spending even when budgets are tight, said OECD chief Angel Gurria.
"In the first three years of the global financial crisis, inequality in the OECD countries grew more than in the 12 years before that," Gurria told CNBC ahead of an OECD gathering in Paris this week at which growing inequality is a key theme.
"You have to focus on creating jobs and allow even in very tight budgets for elements in public spending that will support this [addressing inequality]," he added.
According to the OECD, inequality is growing and distribution of burdens and rewards across society has become more uneven.
The richest 1 percent has gotten significantly wealthier in most countries over the past three decades, with the most speculator rise seen in the U.S., the OECD said in a new report last week.
A book published in 2013 by French economist Thomas Piketty called 'Capital in the Twenty-First Century' has stoked the inequality debate.