The NUJ says Johnston Press management has ended the work experience placement of a teenager who the union claimed was being used to try and break the indefinite strike by journalists at South Yorkshire Newspapers.
The union protested after claiming the 16-year-old had his work experience on the sports desk at the group's Selby Times extended when the strike over job cuts began at the Selby Times, Doncaster Free Press and South Yorkshire Times.
It said the teenager was being asked to write news stories to help fill the strike hit paper.
NUJ negotiator Lawrence Shaw said: "Our strikers have every sympathy with young people who want work experience because they're interested in pursuing a career in journalism . But management at the Selby Times was exploiting that interest so the experience the young man was being offered was in strike breaking. We're glad that exploitation has now stopped."