Answered by Legionary of Christ Father Edward McNamara, professor of liturgy and sacramental theology and director of the Sacerdos Institute at the Pontifical Regina Apostolorum university.
Q: Pursuant to our December 8 comments on the obligation of the pastor to say a Mass for the people, a priest from Toronto asked: “What’s the assistant to the pastor in that regard? Being a co-worker in the parish for spiritual well-being of the faithful in a particular parish, doesn’t he have to say Mass for such intentions?
On the one hand, we can say yes, insofar as every priest must offer Masses and prayers for the souls entrusted to his care.