Final answer:
The attorney has an ethical duty to warn the employee of Conglomerate Corporation about the risks of using work computers for communication related to a legal case, due to the employer's policy of accessing all computers and email files.
Step-by-step explanation:
An employee of Conglomerate Corporation has sought legal advice regarding a potential claim against their employer. As the company's policy grants it access to all computers and email files, personal or otherwise, there is a concern about confidentiality when the employee uses her work computer for communicating with the attorney. The attorney is aware that the employee might use her workstation to communicate about the case.
Considering the implications of Glasser v. United States (1942) on the Right to an Attorney and the expectation of client-attorney privilege, it would be within the bounds of ethical practice for the attorney to warn the client about the risks of using workplace resources for communication on the matter. Moreover, contemporary legislation on employee rights suggests the importance of confidentiality for any complaints or claims made against an employer. Given this context and the potential for the employer to access communication, the attorney has an affirmative ethical duty to inform the employee of the potential risks involved in using work devices for personal matters, especially when it pertains to a legal case against the employer.