The tribunal hearing followed allegations that Grahame Maxwell helped a relative gain unfair advantage in a police recruitment campaign.
North Yorkshire Police’s Assistant Chief Constable Tim Madgwick, said:
“The misconduct hearing involving Chief Constable Grahame Maxwell has now concluded. The outcome of the hearing, at which Mr Maxwell admitted a breach of professional standards, is that he has been given a final written warning.
“Mr Maxwell and the other members of the Strategic Leadership Team look forward to continuing to lead the force and to providing the best possible policing service to the communities of North Yorkshire and the City of York.
“North Yorkshire is the largest single county force in England and is also one of the safest areas in the country. It is widely regarded as a high performing police force and we are committed to delivering a high quality service to our neighbourhoods.