How to write a resignation letter that's effective immediately? Example 1:​​ This is to notify you that I would like to resign from my position as (your post) effective immediately from tomorrow.Learn how to write a short notice resignation letter with this stepbystep guide, template and examples of formal resignation. When you're unhappy at work, it might be time to go. Here's how to write a resignation letter without burning bridges, including samples and formatting. Pick the perfect wording and convey the message best suited for your situation.