Some junior workers at Plymouth's Derriford Hospital feel 'belittled and humiliated' by senior staff, according to a new report.
Inspectors from the Care Quality Commission (CQC) found University Hospitals Plymouth NHS Trust is not making enough progress in addressing issues with storing medicines and meeting diagnostic targets.
Last year the trust was issued with two 'warning notices' by the CQC, requiring urgent action.
The inspectors say they were told that some workers, in the diagnostic and imaging teams, described a 'culture of poor behaviour from team leaders which belittled and humiliated junior staff.'
Progress has been made in addressing concerns within the pharmacy areas, where staff had previously been overstretched.
Trust bosses admitted they had not allocated enough resources to meet the requirements of the warning notice on the pharmacy services.
Inspectors found there was improving performance for patients waiting longer than six weeks for a routine scan, and an improved management of processes within the imaging department.
But some consultants said the workload had not reduced and most reported working harder than at the time of the last inspection.