Sum Rows With Skipping Cells

I'm trying to total up some rows that are put in a repetitive order repeat. I can do this, but the method I'm using is highly inefficient. Is there some slick equation I don't know about?

Example below:

Worker 1 - Double Time - each of these has 200 columns for different job codes
Worker 1 - Over Time
Worker 1 - Regular Time
Worker 2 - Double Time
Worker 2 - Over Time
Worker 2 - Regular Time
Worker 3 - Double Time
Worker 3 - Over Time
Worker 3 - Regular Time
...and so on to 1000 workers

Total Double Time - for each job code
Total Over Time
Total Regular Time