"punitively taxed" is your words not mine. And yes a employee who reap benefits from taxes but acts in a way to evade taxes is acting in a morally bad way. However, an employee has very limited ways of evading taxes and pressuring countries to change their taxation system to fit his/her idea of what is "good" whereas people at the top of the pyramid are very "good" at doing this.
What should he do, not sleep at night thinking about "the good of the company" to be a "good employee"?!