In 1997, 4,369 corporations earned a total of $135 million in Work Opportunity Tax Credits (WOTC). The employers who earned most of the credit were large companies with gross receipts exceeding $1 billion and engaged in nonfinancial services and retail trade. GAO's analysis of state agency data for California and Texas from 1997 through 1999 showed that three percent of participating employers accounted for 82 percent of all hires of WOTC-certified workers. Many employers who participated in the tax credit program in those two states in 1999 say that, besides the opportunity to obtain the credit, their participation in the program was also greatly influenced by such factors as the need to address a labor shortage and the opportunity to be a good corporate citizen. The results of GAO's two state analysis indicate a low probability of replacing employees who were not eligible for the tax credit.