As previously discussed, last March the Supreme Court ruled that the FLSA’s anti-retaliation provision protects “informal” complaints, i.e., unwritten complaints alleging violation of the FLSA are protected activity to support a retaliation complaint.  Kasten v. Saint-Gobain Performance Plastics Corp., No. 09-834 (Mar. 22, 2011). However, the Court declined to resolve the open issue of