I am serving as a moderator for an upcoming seminar on the Supreme Court's decision in Burlington Northern. There, the Court established that employees may challenge "materially adverse" job actions as retaliatory under Title VII.
What is a materially adverse job action? According to the Court: "A plaintiff must show that . . . the challenged action . . . might have dissuaded a reasonable worker from making or supporting a charge of discrimination."
I reviewed most of the major decisions issued after Burlington Northern here.