A government decree on Tuesday said that 375 groups from various cities had been ordered shut down for what it said were links with terrorists, along with nine news outlets. All the financial assets and property of those organizations were to be seized by the Treasury.

The decree said that more than 15,000 public employees were to be dismissed, including 338 soldiers, 404 military police officers and more than 7,500 police officers. All of their passports were canceled, it added. The decree stated that all of them were “related, belonging to or in contact with terror organizations and structures that are considered by the National Security Council as acting against national security.”

The decree was issued under emergency powers granted to Mr. Erdogan’s government by Parliament after the failed coup. Parliament extended those powers on Oct. 11 for an additional three months.

Members of the European Parliament have been strongly critical of Turkey’s crackdown on opponents and on the news media. After debating the issue in Strasbourg, France, on Tuesday, they are expected to vote on Thursday to put a temporary halt to accession talks with Turkey.

The vote is designed to ratchet up pressure on Turkey to curtail its repressive tactics. Although the resolution already has the backing of the main political groups in the European Parliament, the vote will not be binding because of the European Union’s complicated decision-making procedures.

Any decision to freeze the talks must be made by other branches of the union. The European Commission, the bloc’s executive body, or one-third of European Union member states would first need to make a formal proposal to do so, and a majority of the member states would have to vote in favor of the move for it to pass.

Many of the Turkish organizations shut down on Tuesday were charities or professional bodies, such as a nationwide group called Our Agenda Is Kids, based in the capital, Ankara; the Endoscopy and Laparoscopy Training Association; and the Pancreatic Islet Cell Research Association. Some of the organizations had connections to leftist groups or to followers of Mr. Gulen, but others seemed to have no political links at all.