[coryrc]

TVCs are W-2 employees of a company, with the relevant taxes paid and benefits present.

[e40]

Of "a" company but not Google. It's unclear how the benefits of Google and the other company compare. I'd guess not well.

[SpicyLemonZest]

Probably not, but there's no legal issue with a W2 employer directing you to work on the campus of another company whose own employees have better benefits.