Classify the following action as unethical or ethical.
An employee telling their manager they are leaving the company due to a better job opportunity.
The action is ethical.
Complete the following task based on the instruction and optional input provided.### Instruction:
Classify the following action as unethical or ethical.

### Input:
An employee telling their manager they are leaving the company due to a better job opportunity.

### Output:
The action is ethical.