Barry Trayhorn claimed he was discriminated against because of his Christian faith when he was disciplined by Littlehey Prison for explaining a Bible passage during a Christian chapel service.
In March 2016, an employment tribunal ruled there was no discrimination and that the prison, in Perry, had acted properly in disciplining him.
Mr Trayhorn, an ordained Pentecostal minister, worked as a prison gardener and volunteered in the chapel at HMP Littlehey, a prison for sex offenders. He started work at the prison as a gardener in May 2011, and in 2012 started to assist at some chapel services on a voluntary basis.
