Kier Group's Chief Executive Paul Sheffield has decided to step down from the construction group.Sheffield, who has been with the company since 1983 and was appointed Chief in April 2010, will leave at the end of June 2014.Group Finance Director, Haydn Mursell, will succeed Sheffield on July 1st 2014. The FTSE 250 company has started looking for a new Group Finance Director to replace Mursell.Sheffield said: "Since I joined Kier in 1983, the group has grown enormously, both in scale and the services it offers. I'm very proud of what we have accomplished, but feel it is now the right time to transition the leadership of the group. I know that Haydn will do an excellent job leading Kier in the next phase of its development and I wish him every success in his new role." RD