However, the novel The Naked Sun had a human who wanted to do something that a robot thought would be (psychologically) harmful to him. The robot would not allow him, and would have restrained him by force, if necessary.

1st Law: A robot may not harm a human, or by inaction, allow harm to come to a human.*
* In "The Naked Sun" this is explained more fully, and as stated above, relies upon a certain assumption.
