CA Penal Code Section 632 makes it a crime to record any confidential communication in CA, whether it is in workplace or not. Key is that one of the parties has a reasonable expectation of privacy. If only two of you are present and no third party can overhear, there is reasonable expectation of privacy.
You can get civil penalties under Section 637.2 and can seek criminal charges as well.
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This question has the flavor of a homework question...
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