Baby Peter died after months of abuse despite visits from authorities
Three social workers who were sacked after the death of Baby Peter have appealed against their dismissals.
The toddler died after months of abuse in Haringey, north London, in 2007 despite numerous visits.
Haringey Council's deputy director of children Cecilia Hitchen, social worker Maria Ward and team manager Gillie Christou were dismissed last month.
The council confirmed they had appealed. An internal appeals procedure will begin at an unspecified date.
The General Social Care Council is investigating the actions of Ms Ward and Ms Christou.
If Haringey Council upholds the dismissals, the workers could take their cases to an employment tribunal.
Baby Peter was 17 months old when he died with more than 50 injuries in August 2007, despite being on the council's child protection register.
His mother admitted causing or allowing Baby Peter's death. Her boyfriend, 32, and their lodger, Jason Owens, were found guilty at the Old Bailey of the same charge.
The council was heavily criticised in the wake of the verdicts and a number of people in the council were sacked or resigned. They included former head of children's services at Haringey, Sharon Shoesmith, whose sacking was ordered by Children's Secretary Ed Balls.
Council leader George Meehan and the cabinet member for children, Liz Santry, both resigned.
Haringey's head of safeguarding services Clive Preece, who was sacked from his job last month, has not appealed against his dismissal.