business before pleasure
Work or responsibilities should be addressed before fun. I would much rather play video games than study, but business before pleasure, I guess.
Business before pleasure.
Prov. You should finish your work before starting to relax and enjoy yourself. Alan: Hi, Ted. Shall we get something to drink? Ted: Business before pleasure, Alan. Do you have the reports I asked you to bring? I'd love to go water-skiing with you now, but I have a few things to do in the office first. Business before pleasure, I'm afraid.