It is inevitable to make mistakes at work, and how to deal with them is an important workplace skill. Whether to tell your boss immediately depends on several factors: 1. **The impact of the error**: If the error will have a significant impact on the project schedule, budget, or the work of other colleagues, it is best to tell your boss as soon as possible so that remedial measures can be taken in time. 2. **Whether it can be solved by yourself**: If the error is small and you have the ability to fix it quickly, you can consider solving the problem first and then reporting it to your boss. When reporting, emphasize the measures you took and the final result. 3. **Company culture and policies**: Some companies encourage employees to report errors candidly so that solutions can be discussed collectively. If your company has such a culture, proactively reporting errors is a good choice. 4. **Learning and improvement opportunities**: By communicating with your boss about the occurrence of the error, you may receive valuable feedback and guidance to avoid similar mistakes from happening again. If you are not sure how to deal with it, it is usually appropriate to be transparent and honest. When notifying your boss, you can present your own analysis of the problem and possible solutions to show your sense of responsibility and problem-solving ability.