The third day in a row of worker demonstrations ended in no solution between union leaders, managers and government officials.
The protesters blocked a major road in the capital in front of the ministry, and many said they would not stop until their demands are met.
Workers say they want a gradual increase in salaries, up to $160 per month, by 2018, in a sector that employs up to 400,000 people and is a main generator for the economy.
“For our stomachs, we all have to have hope,” said Yang Sophoan, a worker with the Cambodian Alliance of Trade Unions, before she joined demonstrations for the day. “We will not end here. We will go forward.”