MP George Galloway has missed 87% of all Commons votes during his first year as a Bradford MP and spoken in just seven debates.
Data compiled on website theyworkforyou.com show Mr Galloway has taken part in just 13% of the votes over the past year. Most MPs average between 70 and 80%.
He has spoken in just seven debates - the average for MPs being around 30.
Mr Galloway, a member of the Respect party, has declared the figures "fundamentally flawed" as they present only a partial picture of what an MP does. His office said he has tabled dozens of motions, written letters to Ministers and dealt with a large amount of constituency work from his office.