German women who wear a headscarf and have a Turkish name must write four times more cover letters than other job seekers to be offered an interview, according to a study released Tuesday.

Researchers from the IZA-Institute for the Study of Labor sent nearly 1,500 fictitious applications for secretary jobs in Germany: some using a typical German name, others with a Turkish name and a last group with a Turkish name that included a picture of the female applicant wearing a headscarf.

All the fictitious applications described a candidate with a good knowledge of the German language and a German education, leading the reports’ authors to suggest discrimination may make it more difficult for migrant women to find work, rather than lower qualifications — often blamed for the group’s higher unemployment rate.