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Congratulations, you found a new job. But that doesn't mean you should break all bridges with the old one. How you better quit.
It's worked out! You have the chance to start a new job in another company, a new challenge, possibly more money. Even if you are driven by euphoria and would prefer to start today instead of tomorrow: Make sure that you don't break all bridges in your old job and that, as soon as you have given your notice, you are no longer mentally present.
So how do I cancel properly?
CANCELLATION IN WRITING - AND PERSONALLY. For reasons of proof, you should always cancel in writing. Nevertheless (as with any other breakup) it is a question of respect to be expressed personally and face to face. How you should never cancel: by email, text message or office chat. Attention: The notice period starts from the moment you have given the notice of termination and handed it over in writing or sent it (calculate by post!). The date of termination is then the point in time at which the employment relationship should end. For example, if your notice period is one month, you would have to cancel by June 31st to start elsewhere on August 1st.
DON'T LEAVE YOUR COLLEAGUES TOTALLY HANGED. Even if your notice period is maybe only one month: You should ensure an orderly transition so that no bad blood remains. This may also mean staying a day or two longer to train a new colleague or guarantee an orderly handover. If you have open projects, you should also make sure that there is no chaos when you leave.
DO NOT LIE ABOUT THE REASONS FOR THE TERMINATION. Well, you may hate your current job and your boss is a terrible disgust. Then you should of course suppress these motives when you quit. But if there is simply a better option, more career opportunities or a more exciting professional environment, then you can talk about it in your dismissal interview. And don't put forward a "bad illness in the family" or any other made-up reason.
ORGANIZE THE TRANSITION. Nobody is helped if you just disappear and the flood is behind you. Not even to you, because the bad gossip may even get around to your new work environment. Therefore, ensure a friction-free transition by documenting important points for your successor in writing, incorporating them or being available in the first few days if questions arise.
DON'T LET YOUR JOY LOOK OUT TOO MUCH. Of course you are happy that you will soon be able to take on a new job. No sooner have you had the notice of resignation than a burden falls from you. Nevertheless, you shouldn't let your joy show too much and tell your colleagues at every opportunity how happy you are that you only have to come through this office door for ten more days … It will be taken personally. And that leaves bad blood.
WRITE AN EMAIL AGAIN FAREWELL. Even if you didn't like your employer and you are glad that you can close the door behind you: Write a short note as you say goodbye thanking you for the opportunity and the environment. You will think of something - and you won't break a jagged crown if you leave a few nice words. So you go with a good feeling. And your ex-boss will take that into account in your references.