The U.S. Equal Employment Opportunity Commission sued Señor Frog’s alleging sexual harassment of female employees at its Honolulu location. ALTRES Inc., which provides payrolling and professional employer organization services, was also named in the suit.

“From 2007 to 2008, ALTRES provided payroll and administration services to Señor Frog’s,” ALTRES CEO Barron Guss said in a statement. “We never provided or managed staff and had no involvement in restaurant operations. We’ve been named in the suit simply because our name was on the paychecks.”

At least nine female servers and bartenders repeatedly experienced sexual harassment such as sexual remarks, groping, grabbing and some workers were ordered to perform sexual favors for Señor Frog’s officials, according to the EEOC. The harassment was out of control and allegedly stemmed from Señor Frog’s owner himself, according to the EEOC.

Women were also passed over for promotions, obtained less favorable shifts and earned less than their male counterparts, according to the EEOC.

At least one victim quit and others received discipline or had their hours cut in retaliation for complaining, the EEOC reported.

“As the joint employer, the EEOC claims that ALTRES is also liable for the hostile work environment endured by the Señor Frog’s staff, many of whom were employed by ALTRES on paper, according to company records,” the EEOC wrote.