Is it still valid to delay joining the company for a few days after receiving the offer?

The OFFER can take effect after it is issued, just to reduce the impression points and go on time. If the other party doesn't sign a labor contract with you, you can also refuse you directly, so the risk lies with you, and there is no guarantee that you can get the OFFER. This labor law is like this.

1. I think whether you are successful in this job search or not, you must learn a lesson and try to give you a good first impression, so they all want to hear it. Unless they can't find anyone to use you for the time being, they have a bad impression on you.

If you can't figure it out, you can put yourself in the other person's shoes. You are the boss of the company. What do you think when you encounter this situation in recruitment? I'm sure I feel sick, too.

I think you can report it directly, even if the company is about to leave work, you can report it to show your sincerity and give yourself and others an account.

4. In many cases, the applicants who postpone employment after offering are all for delaying and seeing better opportunities. Therefore, although LZ does have something at home, HR is thinking in other directions and thinks that their company is not your first choice.

There may be some problems in the process, especially in large companies. This process is slow. I am currently working in an American company, and the situation is somewhat similar to yours. The final email quotation is much later than the telephone quotation. At least everyone knows each other's current situation. I suggest calling to confirm it.