Greece, creditor talks start in Athens

Representatives of Greece's EU-IMF creditors have arrived in Athens and immediately started talks on a third bailout package.

"Teams from the institutions are already on the ground in Athens and work is starting immediately as we speak," European Commission spokeswoman Mina Andreeva told media on Monday.

"Work has started, meaning that the institutions are talking to the Greek authorities."

But a Greek government source insisted the "negotiations with the technical teams start on Tuesday" and not on Monday, in a sign of continuing difficulties which saw the arrival of the teams pushed back several days.

The EU spokeswoman said the arrival of the teams came after the Greek parliament passed two sets of reforms demanded by the eurozone as part of a bailout deal sealed at a tense summit on June 12-13.

The teams - from the European Commission, European Central Bank, eurozone bailout fund the European Stability Mechanism and the International Monetary Fund - are hammering out the final terms for a rescue package worth up to 86 billion euros ($A129.24 billion).

"Progress is being made step by step towards a support program for Greece," Andreeva said.

"More reforms are expected ... on the part of the Greek authorities to allow for a swift disbursement under the ESM and this is what is being discussed right now."