From an employer's point of view, it's a concern as a bad track record in exams might indicate that the student would struggle to pass a type-rating paper and no employer is going to be too sympathetic.
i'm not to sure how a potential employer would know about repeated ATPL attempts or for that matter the series of pass? can someone enlighten us? is it written on your license?
Off course i'm aiming for first time passes but you never know