This week, Saudi officials announced reforms to the country’s kafala system that would allow seven million low-income workers to exit the country or change sponsors without asking for their boss’s permission—a move that has been met with cautious optimism by those affected.

However, as reported by DW, these reforms don’t cover all migrant workers in the country, amounting to one-third of Saudi Arabia’s population of 34 million.

Some of those most vulnerable to abuse and exploitation, including domestic workers, drivers, farmers, gardeners and guards, have been left out of the reforms.