It definitely is an issue. In fact, the jurors can require to be excused because of financial hardship. Prior to the selection, we do have lots of applications to be excused because of financial hardship.
Evidence of meeting #78 for Justice and Human Rights in the 42nd Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was jurors.
A video is available from Parliament.