Japanese Birthday and Congratulations Messages

Omedetō or omedetō gozaimasu

Omedetō comes from the adjective medetai, meaning auspicious or worth celebrating, so it works as a complete sentence on its own. Adding gozaimasu makes it polite, and that single choice sets the register for the whole message. Write omedetō gozaimasu to a colleague, a boss, a client, a teacher, or anyone you would address with -san and -masu forms in speech. Write plain omedetō to close friends, family and children. Do not add desu after omedetō; omedetō desu is a common learner mistake, and the polite form is already gozaimasu.

The occasion word goes in front, usually with the honorific prefix o- or go-: otanjōbi omedetō gozaimasu, gokekkon omedetō gozaimasu. In casual messages the prefix commonly drops along with gozaimasu, so friends write tanjōbi omedetō. For the most formal written congratulations, to a company president or a client, the set phrase kokoro yori oiwai mōshiagemasu (I offer my heartfelt congratulations) replaces omedetō gozaimasu entirely. Most readers will never need that level; the polite gozaimasu form is safe for almost every adult relationship.

Birthday messages by relationship

A birthday message has a fixed first line and a free second line, and the relationship decides both. To a friend the tone is warm and specific, commonly sent as a chat message on the morning of the day. To a colleague it is short and polite, often one line on a card the whole team signs. To a boss you thank them for their guidance and wish them health rather than fun. To a child you write in hiragana, use their name with -chan or -kun, and comment on how big they have grown. Adults rarely state the age unless it is a milestone such as kanreki at sixty.

The channel matters as much as the wording. Friends commonly get a chat message with a sticker; a paper card is for family, a partner, or someone older. At work, one card signed by everyone is common, and each person adds a short line, so keep yours to one sentence and do not write more than the manager did. If you are close to a colleague, a separate private message can be warmer than the shared card.

Occasions and their standard messages

Every row follows the same shape: the occasion noun, usually with go- or o-, then omedetō gozaimasu. Once you can see the pattern, you can build a message for an occasion not on the list by finding the noun, such as gonyūgaku for starting a school. The next two sections show each row in a polite and a casual version with the second sentence attached.

New job, promotion, exam and graduation

Career and study news follows the same pattern: occasion word, omedetō, then one line that credits the effort. Japanese praise for achievement leans toward effort rather than talent, so yoku ganbatta ne (you worked hard) and doryoku ga minorimashita ne (your effort bore fruit) sound warmer than clever or gifted. For a new post of any kind, the safest wish is gokatsuyaku o oinori shite orimasu, a hope for their success in the role. Learners tend to over-praise here; one sentence about the effort is enough.

Weddings, babies and a new home

Family news carries a little more ceremony. A wedding message commonly wishes the couple a long happiness together, using suenagaku (for many long years) and ofutari (the two of you). For a baby, the standard line congratulates the birth and then wishes the child healthy growth; many people wait until they hear that mother and baby are both well before sending it. For a new home, the message congratulates the move and wishes a good life in the new place. The section on words to avoid explains which verbs stay out of each of these.

The second sentence that makes it personal

The first line of any message is public property; everyone sends it. The second sentence is where the reader feels seen, and it needs only one concrete detail. Name the thing you noticed: the late nights before the exam, the help they gave you in spring, the years you have known each other. A sentence beginning with itsumo (always) or a specific time word such as sakunen (last year) works well. Avoid lists of adjectives; one true fact beats three compliments. Keep it to one sentence, because a long paragraph in a card reads as a speech, and finish with an offer to celebrate if you mean it.

Closing wishes with yō ni

Most Japanese messages close with a wish rather than a sign-off such as best regards. The pattern is a description of the future plus narimasu yō ni, literally so that it becomes: suteki na ichinen ni narimasu yō ni, may it be a lovely year. The verb stays in the -masu form before yō ni whatever the register, so the same closing fits a friend and a manager; only the opening line changes. For superiors, oinori mōshiagemasu (I pray for) carries the formal weight. For friends, a light request on ne, such as tanoshinde ne, is the natural close.

Words to avoid at weddings and other celebrations

Japanese celebration writing has a set of imikotoba, avoided words, whose sound or meaning suggests the opposite of the wish. At weddings the classic ones are verbs of cutting and parting: kiru (cut), wakareru (part), hanareru (separate), owaru (end) and modoru (go back). Words that repeat, called kasane kotoba, hint at a second marriage, so masumasu, tabitabi and kurikaeshi stay out too, even though masumasu is a normal word in a promotion message. The numbers four (shi, which sounds like death) and nine (ku, which sounds like suffering) are avoided in counts and gift amounts.

Each occasion has its own small list. Baby messages avoid nagareru (flow away) and ochiru (fall). New-home messages avoid fire and collapse: hi, moeru (burn), yakeru (be burnt) and taoreru (fall over). Formal wedding cards and telegrams also commonly leave out full stops and commas, since punctuation marks a break; the rows in this guide keep punctuation for readability, and a handwritten card to a friend is not judged by that rule. These conventions are followed most strictly in printed cards and speeches, and older relatives notice them more than friends do.

• Weddings: no kiru, wakareru, hanareru, owaru or modoru, and no repeating words such as masumasu or tabitabi.
• Weddings and gifts: avoid four and nine in counts and amounts; three, five and seven are the usual safe numbers.
• Babies: no nagareru, ochiru, kieru or ushinau; write about health and growth instead.
• New homes: no hi, moeru, yakeru, taoreru or katamuku, and avoid gifts that suggest fire.
• Any formal card: read your second sentence once more for an accidental owaru or kiru before you send it.

Saying it in person

The spoken version is shorter and depends on the reply. You say the set phrase, the other person says arigatō or arigatō gozaimasu, and you add one sentence or one question. If you heard the news from someone else, open with kikimashita yo (I heard) so the congratulation does not sound like a guess. If you are late, put osoku narimashita ga in front and nobody minds. The typical modest reply to congratulations is okagesama de (thanks to everyone around me), and you can answer that with a smile and a question about what comes next.

Two full model messages

Here is the whole shape twice, line by line: a polite message to a colleague who is leaving for a new job, then a casual birthday message to a friend. Each has the set phrase, one personal sentence, a closing wish, and an offer to meet. Copy the structure, not the details; swap in the fact that is true for your person. Read both aloud before you send them, because a line you stumble over when speaking is usually a line the reader will stumble over too.