Hello my name is XXXXX XXXXX I am happy to help you today. Are you asking what the consequences are of not starting the new poisition?
It is fairly common for people to have second thoughts after accepting a new position. As the contract has not started you can contact the new employer to say that you are not in a position to take the job.
There is no action that the employer can take against you as they are highly unlikely to suffer any financial loss as a result of your change of mind.
So whilst technically there is a breach of contract if you fail to give notice under the contract the employer cannot/ will not take action unless they can show they have suffered a financial loss as a result of the breach.
If you have any further questions about this please do ask. If I have answered your question I would be grateful if you would take the time to rate my answer. Thank you and all the best in your new role.
So, apart from bad etiquette etc, I would be free to accept another post and inform the first potential employer that I have changed my mind. Subject, as you say to the technical breach of contract but their being unable to show any real financial loss etc.
yes that's correct.
No problem, all the best in your new job. Please remember to rate my answer as I am not otherwise credited for my time.