Indramayu, West Java – Temporary workers at the Balongan, West Java, oil refinery of state oil and gas company Pertamina staged their second day of protest over demands for higher wages on Wednesday.

A Pertamina spokesman said the protests did not disrupt operations at Balongan, which supplies the bulk of Jakarta's fuel.

Most of the demonstrators were drivers hired by Pertamina's 20 contractors, said Suwandi, spokesman at Pertamina's Distribution Unit VI, under which Balongan operates.

Around 1,000 workers held a peaceful sit-in protest in front of Pertamina's office. On Tuesday, they marched for seven kilometers, from the Balongan refinery complex to the Indramayu legislative council building.

The workers demanded Pertamina increase their monthly salary by 50 percent, from the current Rp 476,000.