It was led by the New York Taxi Workers Alliance, which says it represents 10,000 drivers.
The Welsh Local Government Association, which represents councils, said council which use zero-hour contracts continued to ensure staff retained equivalent pay grading and benefits such as sick pay and annual leave.
Representatives from the Washington Medical Assn., which represents doctors, say the practice, which has been allowed for more than 30 years there, has caused no problems.
Mike Jacob, vice president of the Pacific Merchant Shipping Association, which represents shipowners, says the request is a hidden rate hike.
The New York Taxi Workers Alliance, which represents cabbies, says the global positioning technology and the new meters can't be trusted.
Jennifer Washburn of the Alaska Groundfish Data Bank, which represents trawlers, says that the new proposal shouldn't harm the industry significantly.
The Realty Advisory Board on Labor Relations, which represents management, says New York City's building workers are the highest paid in the country.
The union, which represents steel workers, says Ciobo is "out of touch".
The Wine Institute, which represents California growers, says that's partly because they're selling less for a higher price.
The POA, which represents prison officers, says that overcrowding means unsuitable prisoners are being moved to open conditions.
