The phrase "adhere to voluntary" is not correct in English as it lacks clarity and context.
It could be used in a context discussing compliance with voluntary guidelines or standards, but it needs to be rephrased for better understanding.
Example: "Organizations are encouraged to adhere to voluntary standards set by the industry."
Alternatives: "comply with voluntary" or "follow voluntary guidelines".
"We'll see if they adhere to voluntary guidelines".
It said greater attention was required to ensure investors and governments adhere to voluntary guidelines to protect land rights.
But be wary: businesses do not always adhere to voluntary rules; they naturally want ones that help them make money.
Most manufacturers, however, adhere to voluntary U.S. guidelines from the ASTM, which develops consensus standards to improve product quality and enhance consumer safety.
Since Levi Strauss established the first supplier code of conduct in 1991, Mattel, Nike and about 1,000 other companies now also adhere to voluntary codes of conduct for labor practices, according to the nonprofit organization Business for Social Responsibility, headquartered in San Francisco.
To prepare for hurricanes, wireless carriers say they adhere to "voluntary, industry-based best practices," such as using portable cell towers on wheels, known as COWS, as temporary towers in areas without service.
"In addition, BP has adhered to voluntary standards that go beyond the agency's regulatory requirements".
Adhering to voluntary industry guidelines, Amgen is discussing with the F.D.A. proposed new ads that mention Enbrel.
For decades, the American liquor industry had adhered to voluntary bans on the advertising of its products on radio (since 1936) and television (since 1948), even though its counterparts overseas have long run such spots.
It asked the cloning industry to adhere to a voluntary moratorium on putting cloned products into the food chain to prepare for a smooth transition.
We adhere to the Voluntary Principles on Security and Human Rights, guidelines established by the United States State Department and the British Foreign Office, and we disclose our financial support in a transparent manner.
