Yahoo

Provides all sorts of facilities like food, cab, work from home, gym, etc. People usually leave early but work from home.

A lot of small maintenance projects are going on.

Sometimes, project quality will be too bad, and the project will be returned by the customer. At that time, Yahoo will fire some of the quality people and hire some more. The situation will become even worse afterwards.

Management people will keep on changing. This might be one of the causes.

Organizational restructure needs to be avoided. Try to retain the old employees who developed the project from scratch.