Report: 80% of child welfare workers face violence at work A survey by the Talentia social workers' union also found that 95 percent report experiencing psychological stress. One in four workers in child welfare services said the strain on their mental health was excessive. Image: Silja Viitala / Yle Nearly four-fifths of workers in child welfare services have experienced some form of physical violence while carrying out their duties, according to a report by the social workers' union Talentia. The survey, based on responses from 173 people working in the field of child welfare, also found that 95 percent of respondents reported commonly feeling psychological stress. One in four considered the strain on their mental health to be excessive.