Premanand Maharaj Ji

I can't do naam jap while concentrating on office work. What should I do?

Offer your office work to Bhagwan

Bow to Bhagwan before work and offer your work to Him when you leave, and your work becomes worship. Take even a second to say His name now and then.

Bow to Bhagwan and sit in your office, and leave the office after bowing to Bhagwan and offering your work to Him. Your worship is done.