Work estimates must account for friction
If your project estimates include eight hours of work per employee day, you're gonna have a bad time.
![](https://cdn.stackoverflow.co/images/jo7n4k8s/production/946e984c2b38fe05d215408ecb75ee7a3a3a1e26-2400x1260.jpg?rect=1,0,2399,1260&w=415&h=218&auto=format&dpr=2)
If your project estimates include eight hours of work per employee day, you're gonna have a bad time.
The impetus to provide an estimate for development work most often comes from non-developer stakeholders in your organization. Learning to do it well can improve collaboration and coordination across departments, making everyone happier and more productive.