Lukhanyo Calata, Busisiwe Ntuli and Thandeka Gqubule were fired after speaking out on SABC editorial policy.
Four others have already approached the Labour Court and a ruling in their case is expected on Tuesday.
Speaking on PM Live, Hannes du Buisson of labour union BEMAWU says the SABC has breached the terms and conditions of employment of employees.
He says in his 20 years of involvement with the SABC, he had never seen SABC employees being dismissed without a disciplinary hearing.
Full story here.