Premanand Maharaj Ji
How much naam jap should a working person do, and how can a job become bhajan?
Offer your work, chant in free moments
Offer the work you do to Bhagwan, and chant the Name in the moments when your mind is free. Work offered and the Name chanted together lead to realising God.
In the time when you are not actively working, chant the Name, and offer the work you have done to the Lord. That is called offering your actions.