"Tom has been an integral part of our success and our staff, making it an obvious decision to promote him to offensive coordinator," McCarthy said in a statement. "He has earned this opportunity and we look forward to continued offensive success in 2012."
The offensive-minded McCarthy calls his own plays but relies on his offensive coordinator to plan during the week and help make adjustments during games.
"I'm happy that it's happened, and I'm happy for Joe that he's a head coach, and I'm glad I was able to step into his place," Clements said. "I've been a coordinator before, only for a few years. I've always wanted to get back to doing that, and I'm thankful that it's here in Green Bay."
Before coming to Green Bay, Clements was the Buffalo Bills' offensive coordinator from 2004 to 2005.
Clements has 19 seasons of coaching experience, including 15 in the NFL.
He was a three-year starter at quarterback for Notre Dame, guiding the Irish to a national championship in 1973. He played 12 seasons in the Canadian Football League.
Copyright 2012 by The Associated Press