It won't affect. If you only promise verbally or by email, but you don't sign the relevant offer documents of the other company, it will definitely not bear legal responsibility.

However, there is a "blacklist". This function is generally a tag system that comes with some job search apps. Job seekers can evaluate the interview feelings of the company. Of course, enterprise HR can also mark the interview performance of candidates in the background. Job seekers who are absent for no reason, don't respect HR and lack interview etiquette are often blacklisted.

Extended data:

When rejecting the offer given by HR, you should be firm, sincere, gentle and speak in place, so that the rejected person will not feel humiliated, but will feel very dignified and decent, which will increase his goodwill towards himself.

Besides attitude, we should communicate with HR as soon as possible, so that HR can have more time to find the right person, instead of wasting more time and causing them more trouble.

Most HR will ask the reason for rejection and some information about the new company when they receive the rejection. Prepare the reasons for refusal in advance, and gently answer the other party's reasons so that HR can explain to the company. When HR asks about the new company, you can answer it according to the actual situation and see if you can answer the new company truthfully.