( informal ) used to say that you are pleased about a situation or that sb is lucky that sth happened :
It's a good job you were there to help.
( informal ) used to say that you are pleased about a situation or that sb is lucky that sth happened :
It's a good job you were there to help.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005