Job costs are the labour and materials a specific job consumed. They are the opposite of overhead, which the business carries whether or not that job happens.
Omnyra tracks the two halves separately, as average labour cost per job and average material cost per job, because they move for different reasons and have different fixes.
Reading them together
Material cost rising while labour holds steady usually means supplier prices moved and quotes have not caught up. Labour rising while materials hold steady usually means jobs are taking longer than estimated — a scheduling or scoping problem rather than a purchasing one.
Both rising together, with revenue flat, is a pricing problem.