What is the origin of the idiom "dead loss" and when to use it?

The origin of the idiom "dead loss" is uncertain, but it is used to describe a person who is considered to be completely useless or ineffective in a given situation. This phrase is used in this context to indicate that the person in question is incapable of producing any positive results or benefits, and is therefore a liability or hindrance to any effort or project. This usage of the phrase has been in use since at least the mid-20th century, and it has been applied to a wide range of people, including employees, colleagues, and acquaintances. In general, the phrase is used to express a sense of frustration or disappointment with someone who has failed to meet expectations or deliver the desired results.