Three mosaic panels on the front of this chapel's altar depict the Marriage of Joseph to the Blessed Virgin, the Flight into Egypt, and the Holy Family.

A marble statue of St Joseph is centred in the niche of the reredos. At the top are the carved words: ‘St Joseph, ora pro nobis’ (St Joseph, pray for us).

The chapel is made of fine mosaic, and there is a stencilling that has a carpenter’s plane as the chief motif.

A portrait of Blessed Mary MacKillop resides in this chapel.

The inscription over the chapel arch reads: ‘Beatus vir qui inventus est sine macula’ (Blessed is the man who is found without blemish).