Pung Chhiv Kek, founder of the rights group Licadho, said Cambodia was now sliding backwards in its adherence to human rights norms.
The government will hold a workshop on Dec. 19, but organizations said that it will not be enough time to review the draft for problems.
The NGO law was kicked back to the Ministry of Interior earlier this year after heavy public criticism.
The two cases have fueled concern among court observers they are being stymied by government interference, a charge that officials deny.
At least two women threatened suicide over the loss of their homes.
Drugs such as crystal meth and ecstasy are now among the top three drugs of use in the 15 east and southeast Asian countries.
Cambodia’s press freedoms were ranked 128th out of 178 countries in 2010, a slide from 117th the year before.
The rights group says the Cambodian government is ignoring its international obligations by pushing ahead with forced evictions.
Subedi spoke to VOA Khmer after he was a guest speaker for a conference on the Paris Peace Accords in Berkeley, California.
Cambodia has edged closer to a unilateral system of government, with the ruling party controlling much of the leadership.
Moek Dara and a subordinate, Chea Leng, are facing 38 counts of trafficking and bribery, following their arrest in January.
Cambodian women have returned with stories of physical or sexual abuse at the hands of their employers.