Legal situation: Hello, I got trouble with my marriage and I need you help. My husband and I have been married for 5 years and we have a 4-year-old daughter. Currently, I know that my husband has an affair with a female colleague at work. They traveled together and my husband rented her a house and lived with her. I would like to know if their action is illegal and how it would be sanctioned.
FDVN's opinions:
Thank you for sending your question to FDVN Law Firm (FDVN). Regarding your consulting request, please kindly see FDVN’s opinions as follows:
1. Legal issues relating to adultery:
According to Clause 1, Article 2 of Law on Marriage and Family 2014, the basic principles of the marriage and family regime include: "Voluntary, progressive and monogamous marriage in which husband and wife are equal."
According to Point c, Clause 2, Article 5 of Law on Marriage and Family 2014, these acts are prohibited: “A married person getting married to or cohabitating as husband and wife with another person, or an unmarried person getting married to or cohabitating as husband and wife with a married person".
According to Clause 7 Article 3 of Law on Marriage and Family 2014, cohabitation as husband and wife means a man and a woman’s organization of their living together and consideration of themselves as husband and wife.
Section 3.1 of Joint Circular No. 01/2001/TTLT-BTP-BCA-TANDTC-VKSNDTC guiding the application of Chapter XV “Criminal offenses against the marriage and family regime” of the Penal Code issued by the Ministry of Justice – Ministry Public Security - the Supreme People's Court - the Supreme People's Procuracy provides guidance as follows: Living together like husband or wife means any married person lives with another person or any unmarried person lives with another person who he/she knows to be a married person openly or secretly but like a family. The cohabitation like husband and wife is often proved by common child (children) and the couple are considered by neighbors and the society as husband and wife, having common property, who have been educated by their families, offices and organizations but continue maintaining such relationship…
Therefore, the "monogamy" marriage principle is clearly stated in the Law on Marriage and Family. In order to protect this principle, the law has banned acts of adultery by married people. Therefore, a married person who has an affair with another person is considered violating the law.
2. Handling violations of the monogamous marriage regime
Violators of the monogamous marriage regime, depending on the nature and severity, may be administratively sanctioned or shall face criminal prosecution, specifically as follows:
Regarding administrative sanctions:
According to Clause 1, Article 59 of Decree 82/2020/ND-CP, dated July 15, 2020, a fine ranging from VND 3,000,000 to VND 5,000,000 is imposed for each of the following acts:
- Being married but getting married to another person, unmarried or unmarried but marrying someone whom he or she knows is married or has a wife;
- Being married but cohabitating as husband and wife with another person;
- Unmarried but cohabiting as husband and wife with someone they know is married.
Regarding sentences against criminals:
Violators of the monogamous marriage regime shall face criminal prosecution according to Article 182 of the Penal Code 2015 (amended and supplemented in 2017), with sentences ranging from warning to the maximum of up to 3 years in prison. In particular:
"1. Any married person who marries or cohabits with another person, any unmarried person who marries or cohabits with another person in the knowledge that he/she is already married and in any of the following circumstances shall receive a warning or face a penalty of up to 01 year's community sentence or 03 - 12 months' imprisonment:
a) The offense results in the divorce of one or both parties;
b) The offender has incurred an administrative penalty for the same offense.
2. This offense committed in any of the following circumstances carries a penalty of 06 - 36 months'' imprisonment:
a) The offence results in the suicide of the spouse or child of either party;
b) The court has issued a decision on dissolution of the marriage or compulsory termination of the cohabitation but the offender still defies such decision".
The above is FDVN's legal advice related to your consulting request. We hope this information will be useful to you.
By Vu Dinh Thang – FDVN law firm
(1).jpg)
CONTACT US:
Lawyers in Da Nang:
99 Nguyen Huu Tho, Quan Hai Chau, Da Nang city
Lawyers in Hue:
366 Phan Chu Trinh, Hue City, Thua Thien Hue Province
Lawyers in Ho Chi Minh City:
No. 122 Dinh Bo Linh Street, Binh Thanh District, Ho Chi Minh City
Lawyers in Ha Noi:
Room 501, 5th Floor, No. 11, Lane No. 183, Dang Tien Dong Street, Dong Da District, Ha Noi
Lawyers in Nghe An:
No. 19 V.I Lenin street, Vinh City, Nghe An Province
Website: www.fdvn.vn www.fdvnlawfirm.vn www.diendanngheluat.vn www.tuvanphapluatdanang.com
Email: fdvnlawfirm@gmail.com luatsulecao@gmail.com
Phone: 0935 643 666 – 0906 499 446
Fanpage LUẬT SƯ FDVN: https://www.facebook.com/fdvnlawfirm/
Legal Service For Expat: https://www.facebook.com/fdvnlawfirmvietnam/
TỦ SÁCH NGHỀ LUẬT: https://www.facebook.com/SayMeNgheLuat/
DIỄN ĐÀN NGHỀ LUẬT: https://www.facebook.com/groups/saymengheluat/
Youtube: https://www.youtube.com/c/luatsufdvn
Telegram: https://t.me/luatsufdvn
Group “Legal forum for foreigners in Vietnam”: https://www.facebook.com/groups/legalforeignersinvietnam
Other Articles
- (BẢN TIẾNG VIỆT) BỘ NGUYÊN TẮC UNIDROIT VỀ TÀI SẢN SỐ VÀ LUẬT TƯ QUỐC TẾ 2023 / UNIDROIT PRINCIPLES ON DIGITAL ASSETS AND PRIVATE LAW 2023
- ĐIỂM MỚI NGHỊ ĐỊNH 96/2026/NĐ-CP HƯỚNG DẪN LUẬT ĐẦU TƯ 2025 CÓ HIỆU LỰC TỪ NGÀY 31/3/2026 / NEW POINTS OF DECREE NO. 96/2026/ND-CP PROVIDING GUIDELINES FOR THE LAW ON INVESTMENT 2025 TAKING EFFECT FROM 31/03/2026
- THÔNG TƯ 05/2026/TT-BNG HƯỚNG DẪN DỊCH QUỐC HIỆU, TÊN CÁC CƠ QUAN, ĐƠN VỊ, CÁC CHỨC DANH LÃNH ĐẠO, CÁN BỘ, CÔNG CHỨC TRONG HỆ THỐNG CHÍNH TRỊ SANG TIẾNG ANH
- TRÌNH TỰ, THỦ TỤC ĐĂNG KÝ KẾT HÔN VÀ LY HÔN VỚI CÔNG DÂN NƯỚC NGOÀI TẠI VIỆT NAM / PROCEDURES FOR MARRIAGE REGISTRATION AND DIVORCE INVOLVING FOREIGN NATIONALS IN VIETNAM
- SPECIFIC PERFORMANCE VERSUS DAMAGES FOR BREACH OF CONTRACT BY STEVEN SHAVELL
- TỔNG HỢP 10 MẪU HỢP ĐỒNG KINH DOANH BẤT ĐỘNG SẢN, KINH DOANH DỊCH VỤ BẤT ĐỘNG SẢN CỦA MỘT SỐ QUỐC GIA TRÊN THẾ GIỚI / COLLECTION OF 10 TEMPLATES OF REAL ESTATE BUSINESS AND REAL ESTATE SERVICE AGREEMENTS FROM COUNTRIES AROUND THE WORLD
- TỔNG HỢP 10 MẪU HỢP ĐỒNG TRONG LĨNH VỰC LAO ĐỘNG TRÊN THẾ GIỚI / COLLECTION OF 10 AGREEMENT TEMPLATES IN LABOR SECTOR WORLDWIDE
- NGHỊ ĐỊNH 293/2026/NĐ-CP HƯỚNG DẪN THỰC THI CÔNG ƯỚC LA HAY NGÀY 05 THÁNG 10 NĂM 1961 VỀ MIỄN HỢP PHÁP HÓA ĐỐI VỚI GIẤY TỜ CÔNG CỦA NƯỚC NGOÀI (CÔNG ƯỚC APOSTILLE)
- TỔNG HỢP 15 BẢN ÁN CỦA TÒA ÁN TỐI CAO SINGAPORE VỀ VIỆC BÁC ĐƠN YÊU CẦU HỦY PHÁN QUYẾT TRỌNG TÀI / COLLECTION OF 15 SINGAPORE SUPREME COURT JUDGMENTS ON THE DISMISSAL OF APPLICATIONS TO SET ASIDE ARBITRAL AWARDS
- BÀI HỌC TIẾNG ANH PHÁP LÝ: ATTEND
- MỨC PHẠT ĐỐI VỚI HÀNH VI XÂM CHIẾM VỈA HÈ VÀ CÁC TRƯỜNG HỢP ĐƯỢC SỬ DỤNG VỈA HÈ TẠM THỜI / FINES FOR PAVEMENT ENCROACHMENT AND CASES ELIGIBLE FOR TEMPORARY PAVEMENT USE
- NGHỊ ĐỊNH 296/2026/NĐ-CP SỬA ĐỔI, BỔ SUNG MỘT SỐ ĐIỀU CỦA NGHỊ ĐỊNH SỐ 168/2025/NĐ-CP NGÀY 30 THÁNG 6 NĂM 2025 CỦA CHÍNH PHỦ VỀ ĐĂNG KÝ DOANH NGHIỆP
- ĐIỀU KIỆN PHÁT SINH QUYỀN TÁC GIẢ ĐỐI VỚI TÁC PHẨM DO TRÍ TUỆ NHÂN TẠO TẠO RA THEO NGHỊ ĐỊNH 134/2026/NĐ-CP / CONDITIONS FOR EMERGENCE OF COPYRIGHT PROTECTION OF AI-GENERATED WORKS UNDER DECREE NO. 134/2026/ND-CP
- HƯỚNG DẪN QUY TRÌNH XÁC THỰC ĐIỆN TỬ ĐỐI VỚI NGƯỜI NỘP HỒ SƠ VÀ NGƯỜI UỶ QUYỀN NỘP HỒ SƠ ĐĂNG KÝ DOANH NGHIỆP CỦA CỤC PHÁT TRIỂN DOANH NGHIỆP TƯ NHÂN VÀ KINH TẾ TẬP THỂ
- THE LEGAL ENVIRONMENT AND BUSINESS LAW BY DON MAYER, DANIEL M. WARNER, GEORGE J.SIEDEL, JETHRO K. LIEBERMAN AND ALYSSA ROSE MARTINA
- TRANSNATIONAL COMMERCIAL LAW (SECOND EDITION) BY ROY GOODE, HERBERT KRONKE AND EWAN MCKENDRICK



