Mistake In Birthday Wish

Hi,
The sentence definitely has grammatical mistake. Since its a well meant, sincere wish, I am sure nobody will look down on you for the error. But please check with other senior members of your faculty or company so as to avoid making another grammatical error the next time around. It might not look good for the Human Resources image.
No hard feelings friend.
Have a Blessed day.

Let us not confuse issues. It is important that the message is conveyed. OK. But it is also important that we write correctly. There is nothing wrong in learning to write correctly.
The sentence " We all wishes you happy birthday" is grammatically incorrect.
The grammatically correct forms are as follows:
I wish. You wish. We wish.
He wishes. She wishes. Mr. X wishes. Mrs. Y wishes.
Mr. & Mrs. X wish.
Message is indeed important. Conveying it correctly adds value to it.

Dear All,
Please have a look on grammar, As per Grammar rules. We can’t use s and es with 1st and 2nd person. s or es should be used with 3rd person only.
So "We all wish you happy birthday" is correct one because here we is representing 1st person.
&
"We all wishes you Happy Birthday" is wrong because es is used with wish. It should be wish only. If you are using es with wish then stance will be (They all wishes you Happy Birthday)
e.g I want, You want, He wants. See the difference, here we added s with 3rd person only.

Though the first one is grammatically wrong, but in communication I always believe that it must be assessed in the light of Context,Intent and Content (CIC). Here context was birthday, intent was to wish your friend and Content was your feelings in the form of best wishes. So ur communication is perfect no need to worry.

Buddy I do agree that it’s the matter of feelings. But the question is that how the sentence is wrong? So we have to correct the sentence. Being a HR professional we should be a COACH as well as MENTOR.

what is the difference in these two sentences when its shows your gratitude towards one. kb

Message cannot be so important than the method or the language. It is stupid to send such incoorect messages.

This is present indefinite tense. In such tenses "s" or "es" is suffixed with the verb when subject is third person. Grammatically your sentence should be:-
"We all wish you happy birthday"
See another example:-
"He wishes you happy birthday" This is correct because subject "he" is third person.
As advised by other learned professionals in this thread itself it is better to keep things/messages short & simple, so that we can avoid grammer jargons.
Thanks & Regards,
Lokender

'Wishes' can be as 'The organization wishes you ,
' Company wishes you ' or ' We wish you ' 'All of us wish you '
etc. Very simple. Thanks and regards ,
Aspirations

Dear friend,
as per correct grammer- in simple present
if the subject is- He, she or it then does + verb (here- wishes)
But if the subject is I, we, they (you are both plural and singular) then do + verb (here- wish+do = wish)
So the real mistake is - since the subject is we, you need to use wish
hope you are convinced
Joseph.P.M