It is very common to make mistakes at work. The key is how to deal with the mistake. If the mistake is minor and will not cause serious consequences, you can usually consider telling your boss in time. Doing so can show your sense of responsibility and honesty, and at the same time avoid the problem from escalating. If you decide to tell your boss, you can take the following steps: 1. **Calm analysis**: First sort out the specific circumstances of the mistake and evaluate the impact on your work. 2. **Prepare solutions**: If possible, think about how to solve the problem in advance, or how to avoid similar mistakes in the future. 3. **Frank communication**: Tell your boss in a concise and clear manner, explain the circumstances of the mistake and the measures you are going to take. 4. **Accept feedback**: Regardless of your boss's reaction, keep an open mind and accept suggestions and feedback. In short, timely communication can often gain understanding and support, and can better solve problems.