They call for help from the UN and rights groups, fearing deportation to Vietnam.
Recent arrests and imprisonments show how the courts are used as a political tool, he says.
They slam the arrests and convictions as politically motivated.
The four had protested the sentencing of fellow land campaigners a day earlier.
The government decides that workers should receive a monthly salary increase of U.S. $28.
The women had blocked a major artery in the capital Phnom Penh.
But an opposition party lawmaker warns of increased indebtedness to Cambodia’s powerful neighbor.
There is no law to prevent nepotism, says the parliament’s spokesman.
American agencies must set conditions for Cambodia to force progress with election reform, he says.
Anyone should be able to apply for a position on the national election body, he says.
The court allegations stem from unspecified activities in 2011.
A working group decides by ballot to advance proposals by government and employers.
One parliamentarian has at least seven family members on the National Assembly’s payroll.
The remaining part of the draft is expected to be finalized next month.
Heng Pov was once an adviser to Prime Minister Hun Sen.
The move is criticized by a human rights group.
Cambodian press reports had said loans would resume in December.