Custody officers who work in Doncaster Prison are among the lowest paid in the country, according to figures released by the government.
Statistics show the average starting salary for officers working at HMP Doncaster, which is run by private contractor Serco, is £17,654.
The figure has been compared to starting salaries at 10 other privately-run prisons in England and Wales, where the amounts range from to £23,108 to £19,655.
The highest salary is given to officers in HM Bronzefield Prison in Ashford, Surrey which is run by Sodexo Justice Services.
There are only three other prisons where the starting salary for an officer is the same as that paid to an officer in Doncaster.
They are HM Ashfield in Gloucestershire, HM Dovegate in Staffordshire, and HM Lowdham Grange in Nottinghamshire.
These are all managed by Serco.
The company starting running the prison in 2003, nine years after it first opened, and will continue to do so until 2026.
Prison Custody Officers are responsible for the secure supervision of detained prisoners as they are being transported and escorted.