Work For Hire
Copyrights do not belong to the creator in the case of works made for hire, for example; when you are hired to write songs. The employer and not the employee is considered to be the author. Copyright law defines a "work for hire" as a work prepared by an employee as part of his or her employment.A work for hire is also a work specially ordered or commissioned for use. For example someone could be hired to make: a part of a motion picture or other audiovisual work, a translation, a supplementary work, a compilation, an instructional text, a test, answer material for a test, a sound recording, or an atlas.
Joint Works
The authors of a joint work are co-owners of the copyright in the work, unless there is an agreement to the contrary.Collective Works
In the case of a collective work for example a magazine; an author holds the copyright to one article of a magazine but not to the collective work of the entire magazine.Two General Principles of a Copyright Claim
Mere ownership of a book, manuscript, painting, or any other copy or phonorecord does not give the possessor the copyright. The law provides that for example; if you buy a painting, you own the painting, but not the rights to copy the painting. Copyright privileges have to be negotiated for separately.

