This is the point of having Professional Engineers and a very strict deontological code; it tips the incentive scale towards doing the right thing.
When asked to do something unethical, the P.E. has a choice: they can refuse, in which case they might lose their job; or they can comply, in which case they might lose their license altogether (and thus their job).
When asked to do something unethical, the P.E. has a choice: they can refuse, in which case they might lose their job; or they can comply, in which case they might lose their license altogether (and thus their job).