As a fun thought experiment, let us put the boot on the other foot. What do you think of the following situation?
"You received a job offer from a company, which asked you to join in 60 days. You accepted the offer and resigned from your current job. You were happy with this job offer, and decided not to expend any further effort to look for other offers. 30 days into your notice period, the company calls you and informs you that they would be withdrawing your offer as they have found a better candidate."
Be aware of the possible consequences of rejecting an accepted offer and then make a decision.
- By reneging on an already accepted offer, you will burn bridges with this company. This is especially certain since you are doing it after a month.
Word does spread around the industry, which means you could be making a bad name for yourself among people who may have hired you in future.
Some scenarios where such bad vibes spread around would be:
- HR of the company A (whose offer you reject) has a spouse/sibling/friend working in company B.
- Someone who interviewed you moves to company C1.
- You attend a conference or other event where you meet someone from company A. Not only does this create an awkward moment for you, but depending on how bitter you left them, they might "show and tell" about the incident to someone from company D2.
You are potentially putting yourself on the blacklist of company B, C, D as well, besides company A.
You certainly have the freedom to choose between what is ethical and what is right for you, and it is a decision you alone should make. It is possible that none of the above scenarios will actually occur, and even if they do occur, it may not affect you. If you feel the short-term gratification is worth the long-term risks you would be taking, then go ahead.
1 I have experienced this first hand. My boss sent me a resume that he had shortlisted, and asked me to interview them the next week. I was "pleased" to see this candidate was a former co-worker at my previous company, who had "disappeared" abruptly. The interview did not happen.
2 I have been the "audience" of such "show and tell" events on a couple of occasions.