The US Department of Justice announced Thursday it reached a settlement with Randstad North America over allegations the company’s office in South Plainfield, New Jersey, ran afoul of the Immigration and National Act.

Randstad’s office required permanent residents to present specific documents, such as Permanent Resident Cards, even when they presented sufficient documents to prove their work authorization, according to the department. The settlement calls for Randstad to pay a civil penalty of $135,00 for unlawful document requests to permanent residents and provide $909 in back pay to the worker whose complaint initiated the investigation

“Randstad takes compliance with Employee Eligibility Verification requirements very seriously,” the company said in a statement. “We worked in full cooperation with the Department of Justice on their investigation. In response to the investigation and as a result of our own internal review, we re-trained recruiting specialists at our South Plainfield branch office to ensure full understanding of the verification guidelines. We are pleased to have successfully closed this matter.”

The department found the South Plainfield office subjected the complainant, who was a permanent resident, to improper requests for specific documents on two occasions and refused to hire her based on citizenship status even though she was authorized to work.

“Staffing agencies must properly train their employees not to require more or different work authorization documents than specified by law, because of a worker’s citizenship status,” said Eric Dreiband, assistant attorney general of the Civil Rights Division. “We commend Randstad for its commitment to ensuring that its hiring and onboarding activities comply with this law.”