End-of-year and New Year holidays — the vacation taken around the end of December through the beginning of January (e.g., Dec–Jan) by companies and schools.
会社は年末年始休暇で12月29日から1月3日まで休業する。
The company will be closed for the year-end/New Year holidays from December 29 to January 3.
年末年始休暇は家族と過ごす人が多い。
Many people spend the year-end/New Year holidays with their families.
年末年始休暇の期間は会社によって異なるので就業規則を確認してください。
The period of the year-end/New Year holidays varies by company, so check the work rules.