My Parents Jobs

My Mum and Dad job is at Opus. 
Opus is a place were they test all the rocks for the road. They sometimes go out and put another layer on the road and stuff. My Mum and Dad work in a laboratory and do tests to check wether the rocks are safe for the road. I am actually not to sure on what else they do. My Dad is the boss of the laboratory that he works at he works from 6am until 6pm and my Mum works from 9am until 3pm because she has to look after my brother and I.