By itself that's not important, but it is illustrative of just how much power a country gives away when it signs the Lisbon Treaty. It gets worse. If Greece doesn't take steps to remedy its budget deficit the EU has the power simply to take over the economic running of the country.
Section 126.9 of the Lisbon Treaty says:
If a Member State persists in failing to put into practice the recommendations of the Council, the Council may decide to give notice to the Member State to take, within a specified time limit, measures for the deficit reduction which is judged necessary by the Council in order to remedy the situation.
In other words, if you don't follow their "recommendations" those recommendations can become orders. Greece would cease to be an independent nation. The Greeks would vote for a government but someone else would be running the country.
They might not like that.