Suspended.....with interviews lined up.

Savvy_Sue

This is a situation where it MAY be worth having a conversation before you write the resignation letter.

"Boss, I know I made a very silly mistake and I accept that the likely result of your investigation is dismissal. If I resign, it will save you having to continue the investigation, and I wonder whether in return we could agree the wording of any reference you'll give?"

I'm sure others will be able to improve on this. And be warned that they don't have to agree a reference even if you do resign and they can halt the investigation, and in some lines of work, it will not be possible to halt the investigation, or to fail to mention it in any future references.

TBagpuss

If you have an actual job offer then by all means accept it, but bear in mind that any offer is likelyto be 'subject to references' so you do need to address that issue.
Check whether your company has a policy regarding references, and if so, what that policy says.

then, check with your boss, either to confirm that they will still provide a basic reference (e.g. confirming the dates of your employment and your job title) or alternatively, asking them to confirm what they will say.

They may well be relevied if you are willing to leave quietly as it means that thye don't have to continue with the times and hassle of disciplinary proceedings or to worry about you appealing, but I would avoid actually giving notice until at the very least, you have a firm job offer and confirmation taht the curentemployers will give a refernce.

If thye are not prepared to agree that then you will need to consider what you aregoing to say to prospective new enployers, as otherwise you risk offers being withdrawn once they get your refernece, if it mentions disciplinary action and/or dismissal.