Earlier quoted context omitted.
"(2) a work specially ordered or commissioned for use as a contribution to a collective work, as a part of a motion picture or other audiovisual work, as a translation, as a supplementary work, as a compilation, as an instructional text, as a test, as answer material for a test, or as an atlas, if the parties expressly agree in a written instrument signed by them that the work shall be considered a work made for hire…
> b) Works Made for Hire. >In the case of a work made for hire, the employer or other person for whom the work was prepared is considered the author for purposes of this title, and, unless the parties have expressly agreed otherwise in a written instrument signed by them, owns all of the rights comprised in the copyright. https://www.copyright.gov/title17/92chap2.html#201 You are responsible for infringing works you…
> In the case of a work made for hire...
Per what I quoted in my last post, commissioned works in the usual sense are not normally "works made for hire" so none of that applies.
> respondeat superior, a common law principle that holds employers legally responsible for the acts of an employee, if such acts are within the scope and nature of the employment.
i.e. exactly what I said a couple of posts back: "If your employee violates copyright in the course of working for you then you might be responsible for that, but that's for the same reason that you might be responsible for any other crimes your employee might commit in the course of working for you, not because you have some special copyright-specific responsibility."