More than 700,000 people in Indonesia are estimated to live in modern slavery, according to a new index on global slavery that ranks the country eighth out of 167 countries based on the number of people subject to abuse such as forced labor, servitude or sexual exploitation.

The countries with the highest numbers of people in modern slavery are India, China, Pakistan, Uzbekistan, Russia, Nigeria, the Democratic Republic of the Congo, Indonesia, Bangladesh and Thailand. Together they account for 71% of the estimated 35.8 million people in modern slavery, says the 2014 Global Slavery Index, a report produced by global human rights organization the Walk Free Foundation. It defines modern slavery as “one person possessing or controlling another person in such a way as to significantly deprive that person of their individual liberty.”

Modern slavery in Indonesia is most prevalent in domestic work, the fishing sector and agriculture, specifically palm oil, rubber and tobacco plantations.

“The wide gap between wealth and poverty, high levels of unemployment and corruption create an environment in which modern slavery flourishes in Indonesia,” says the Indonesia section of the report. The majority of Indonesia’s working class is employed in the informal sector, where they have no contracts, set wages or social security.

Unable to find productive jobs at home, many Indonesians also end up seeking work abroad, where they are vulnerable to physical and sexual abuse, says the report. The Indonesian government has taken steps to improve protections for migrant workers overseas and has placed a ban on sending domestic workers to Saudi Arabia following the execution of an Indonesian women accused of murdering her employer. But many women still lack legal protections in other countries.