Opposition leader Sam Rainsy says he plans to gather garment workers together in a demonstration, after about 2,000 gathered for a strike in front of the June Textiles factory outside Phnom Penh.
The factory, which sits on the main road leading to the airport, burned down in March, costing the company millions of dollars and leaving many workers without pay.
Workers said they hoped to block the airport road Sunday night, as the prime minister and other leaders returned from an Asean summit in Indonesia, but were dispersed by riot police.
At least eight workers were injured as police clashed with protesters and two were detained through Monday. Sam Rainsy told reporters Sunday he planned a larger demonstration soon.