A scrap metal dealer subjected a vulnerable man to repeated brutal beatings and forced him to work for free for more than two years.
49-year-old Anthony Howard Baker kept his victim in squalid conditions in a caravan at the scrap yard he ran in Neath and held him virtually prisoner for more than to years through violence and intimidation.
Baker's son, 19-year-old Harvey Baker, also subjected the labourer to repeated and serious assaults during his ordeal.
The father and son, who live at Earlswood Cottages near Jersey Marine, pleaded guilty to multiple offences when they appeared in the dock at Swansea Crown Court.
Anthony Baker pleaded guilty to holding a man in servitude and subjecting him to forced or compulsory labour contrary to the Modern Slavery Act as well as four counts of assault occasioning actual bodily harm, one count of unlawful wounding, and one count of inflicting grievous bodily harm.
Harvey Baker pleaded guilty to six counts of assault occasioning actual bodily harm, three or inflicting grievous bodily harm, and one of unlawful wounding.
The offences cover the period of October 2016 to January 2019.
The 20-year-old victim, who had been living in a YMCA before his ordeal, was rescued by police who had gone to the isolated compound near the Briton Ferry bridge following calls from concerned members of the public.
The man was suffering with a catalogue of horrific injuries.
Prosecutor John Hipkin said the beatings administered by Anthony Baker were ''examples of how the enforced labour was enforced.''
Judge Paul Thomas QC described the circumstances of the offending as ''very unusual, not to say startling.''
He said he wanted reports into the defendants before passing sentence, in particular into their backgrounds, and to consider the issue of whether the Bakers should be considered dangerous offenders.
Matters were adjourned until June 14th and the defendants remanded into custody.