A conjunctive phrase used after a clause indicating a time or situation to express concession, thanks, or apology (e.g., 'even though' / 'at a time when...'). Often used politely.
お忙しいところを手伝っていただき、本当にありがとうございました。
Thank you very much for helping me even though you were busy.
休みのところを出勤させてしまい、申し訳ありません。
I'm sorry for making you come in on your day off.
担当者が不在のところを、ご連絡いただきありがとうございました。
Thank you for contacting us even though the person in charge was absent.