The presence or absence of something; whether something exists or not (used for things like documents, attendance, etc.).
書類の有無を確認してください。
Please check whether the documents are present.
出席の有無をメールでお知らせください。
Please let me know by email whether you will attend.
その証拠の有無によって判断が変わる。
The decision will change depending on whether that evidence exists.
Whether there is consent or refusal; a yes-or-no status used to indicate acceptance/denial or approval/disapproval.
上司の同意の有無で実施が決まる。
Whether the boss agrees will decide if it goes ahead.
採用の有無は来週発表します。
We will announce next week whether the candidate was hired or not.
契約締結の有無を速やかに報告してください。
Please report promptly whether the contract will be signed or not.