"As far as I'm concerned, I'm irrelevant," she told reporters after the bank's policy-setting meeting.

"As long as I deliver on leading this institution of talented people who are driven to do their job, the rest - me as a person - irrelevant," she said.

The trade union representing ECB staff said earlier this week a majority of employees think Lagarde is not the best person for the job, according to a survey it conducted.

Lagarde said the survey itself was very important, regardless of the poor rating she received from the bank's staff.

"We pay great attention to these technically sound responses and we act upon them and will continue to do so," she said.

With Lagarde having no central banking experience, unlike her predecessors, her appointment as ECB chief in 2019 was questioned at the time by some analysts and politicians.

Lagarde said she was still happy and focused in her role.

"I'm extremely proud of the staff of the ECB and I'm very proud and honoured to lead the institution, because we are driven by a mission - delivering price stability," she said.

(Reporting by Francesco Canepa; Editing by Hugh Lawson and Peter Graff)