The concept of "works made for hire" can be complicated. This circular may help you figure out if the work you're interested in qualifies as a work for hire or not, and what the implications are.
When creating your own works, you may want to consider licensing its copyright under Creative Commons.
From the CC website: "Creative Commons is a nonprofit organization that enables the sharing and use of creativity and knowledge through free legal tools.
Our free, easy-to-use copyright licenses provide a simple, standardized way to give the public permission to share and use your creative work — on conditions of your choice. CC licenses let you easily change your copyright terms from the default of “all rights reserved” to “some rights reserved.”
Creative Commons licenses are not an alternative to copyright. They work alongside copyright and enable you to modify your copyright terms to best suit your needs."
(Kevin Smith & Lisa Macklin, Handout on “A Framework for Analyzing any Copyright Problem.”)
One of the most difficult issues for educators and librarians, when faced with a copyright problem, is simply knowing where to begin -- which parts of the legal rules and doctrines apply to this specific problem.
To deal with this uncertainty, we suggest working throught the following five questions, in the order they are presented. They are simple questions, but they are not easy to answer. By working through them in order, it is possible to identify which of the parts of copyight law apply to the specific problem you need to address.
The five questions are: