The domestic plays industry has a long history, but it is pointed out that there are still many deficiencies in terms of protection of the rights of workers, including playwrights. In particular, there is criticism that the conflict of copyright legislation related to the current plays field is infringing on the rights of theater workers in the plays field. Along with this, there is a growing demand for systematic legal reform. Thus, we reviewed the problems related to the copyright of playwrights, focusing on non-profit performance regulations in the Copyright Act in this paper. Also, this study examined the ways to guarantee the rights of playwrights who have been alienated from the protection of rights by suggesting improvement plans for problems. Through this, it is expected that the rights of playwrights who have been alienated in terms of protection of rights can be guaranteed.