Kurt Lewin from a leader. Members are given choices and collectively decide the division of labor. Praise and criticism in such an environment are objective, fact minded and given by a group member without necessarily having participated extensively in the actual work. Laissez-faire environments give freedom to the group for policy determination without any participation from the leader. The leader remains uninvolved in work decisions unless asked, does not participate in the division of labor, and very infrequently gives praise. An early model of change developed by Lewin described change as a three-stage process. The first stage he called "unfreezing". It involved
Albert Tannenbaum his services. Perhaps the most famous murder committed by Tannenbaum as a member of Murder, Inc. was that of Harry Greenberg, nicknamed "Big Greenie", in Los Angeles on November 22, 1939. Tannenbaum had been assigned to the hit by Buchalter, who at the time was on the lam from New York District Attorney Thomas E. Dewey and was trying to eliminate potential witnesses that Dewey could use. Tannenbaum followed Greenberg first to Montreal and then to Detroit before finally catching up to him in Los Angeles and killing him under the supervision of (and with the assistance of) the Syndicate's