American Express Co. is the latest card services company to embrace the  trend toward employee incentive awards. 
The New York-based financial giant, the leader in the corporate card  business, introduced Incentive Funds, a prepaid card that companies can use   to reward staff members.   
  
"It is a natural fit for American Express" to target that market, said  Margaret Simonetti Kelly, the company's general manager, incentive   services.   
The idea behind such cards is to reward employees for achieving certain  performance goals with points or cash that can be used to buy merchandise   or services.   
  
The Incentive Funds card can be used wherever American Express cards are  accepted; the employer determines the monetary value of the card. 
The incentive-card concept has been around for at least six years, but  interest has gone up in the past year, said credit card consultant Michele   Turkel in Scarsdale, N.Y.   
Michael L. Fraser, vice president of Meridian Enterprises Corp., a St.  Louis-based company that develops employee incentive programs, believes   many companies are trying to emulate the success that Meridian has had with   its patented Meridicard program.     
  
"We operated without competition for about six years," Mr. Fraser said.  "I believe that those organizations didn't want to miss out on the success   we have experienced."   
Boatmen's Bancshares of St. Louis, First Bank System of Minneapolis, and  Best Bank of Boulder, Colo., also offer employee reward cards. 
John Haugh of Carlson Marketing Group, the Minneapolis-based company  managing First Bank's award card, said that although Meridicard may have   played some role, the employee incentive market has taken on a life of its   own, and is estimated at about $7 billion a year.     
Except for Meridicard, the incentive cards are debit cards; Meridian  Enterprises has a patent protecting certain types of credit card   transactions. Meridicard holders draw against an account that employers   establish.     
  
D. Mark Jackson, vice president of Boatmen's electronic banking  business, said, "We are aware of the patent and didn't want to infringe on   it."   
Meridian is suing a number of big credit card players - including Visa,  MasterCard, and Chase Manhattan Corp. - accusing them of infringing on its   patent.   
Incentive cards appeal to banks because they provide another source of  merchant fee income, said Mr. Jackson. 
Boatmen's has issued 200,000 cards in two MasterCard-branded incentive  programs, Mr. Jackson said. Maritz Inc., a St. Louis company specializing   in employee incentive packages, is managing the Boatmen's cards,   Exclusively Yours and Your Choice, introduced in April 1995 and July 1996,   respectively.       
American Express, which has been testing Incentive Funds for several  months with Allsteel, a furniture manufacturer, said the card is a logical   extension to a similar program it has offered since 1987, the American   Express Corporate Gift Cheques.     
The gift check, like a travelers check, is usable once, whereas the  Incentive Funds card can be used for recurring awards to the same group of   employees.   
American Express is marketing the program primarily to companies that  offer its corporate travel and expense cards. 
"If it strengthens those relationships, that's wonderful," said Ms.  Kelly, "but the card was (inspired) by our preexisting work and experience   with incentive programs."