Michigan National Corp. is redesigning its branch system in an attempt  to boost revenues. 
In the next three years, the Farmington Hills-based company plans to  close more than 50 traditional branches and replace many of them with   supermarket offices.   
  
Total square footage in Michigan National's 200-branch network would be  reduced by about 27%, said chief executive officer Douglas E. Ebert. 
The restructuring is part of a plan to focus on growth businesses and  reduce overhead expenses. The plan has so far prompted $11 million of   charges against earnings, taken in the fiscal year that ended Sept. 30.   Half of that was spent on the branch redesign.     
  
The $10 billion-asset company is concentrating on investment management,  retail banking, and lending to small and midsize businesses. It also has a   fledgling agricultural lending division.   
While Michigan National, a unit of National Australia Bank Ltd., hopes  eventually to reduce overhead expenses, the branch redesign is intended to   sell more investment products, Mr. Ebert said.   
He declined to state specific revenue goals but said the restructuring  was needed to continue earning more than 1.5% on assets. Michigan National   contributes about 10% of $149 billion-asset National Australia's net   income.     
  
"The rationale has not been expense-driven," Mr. Ebert said of the  program. "We have a finite amount of resources. We need to invest in   businesses that will give us an economic return three, four, or six years   from now."     
So far, three traditional branches have been closed and five smaller  branches opened this year. Four of the new branches are in supermarkets.   The company also sold three branches this year in western Michigan.   
Mr. Ebert said he doesn't anticipate substantial additional charges to  earnings. He also said layoffs would be minimal. The company has about   3,500 employees.   
In addition to reconfiguring branches, Michigan National has outsourced  some services and is leaving certain businesses. 
  
Mr. Ebert said about one-third of the restructuring charges covered the  costs of leaving some businesses. The company decided early this year, for   example, to stop indirect lending. But Michigan National will retain its   $400 million portfolio of these loans.     
Michigan National has also gotten out of the business of keeping records  for 401(k) retirement plans. 
"Michigan National, at its size, cannot be all things to all people, but  there are some things they can do very well," said Michael Moran, an   analyst at Roney Capital Markets, Detroit.