As emphasized repeatedly in class, this is the most important thing you can do to insulate yourself from unethical behaviour in your business dealings:

a$.$

Communicate with your peers

b$.$

Be persistent, work hard, keep your head down in the workplace

c$.$

Think about and know your own values$--$what you think is important

d$.$

Avoid getting involved in ethical concerns that are not your business

e$.$

Be open to criticism from underlings