Oyasumi o itadakimasu (お休みをいただきます): I will receive a day off. The humble verb itadaku, to receive, presents leave as something given by others. An article in President Online describes a request for leave that begins with an apology: Sumimasen. Raishū oyasumi o itadakimasu node. Excuse me. I will be taking a day off next week.
Ana o akeru (穴をあける): to make a hole. The dictionary entry for ana, hole, includes a gap left where a needed person is missing, with the example jin’in ni ana ga aku, a hole opens in the staff.