PG had a good quote (paraphrasing) that when a co-founder has less than 50% of the company one has to ask why you'd pick someone who doesn't bring as much to t

PG had a good quote (paraphrasing) that when a co-founder has less than 50% of the company one has to ask why you'd pick someone who doesn't bring as much to the table as you do. As andriesm says, a constructive discussion is in order. Looking at this analytically though if your partner has only 20% of the business (and assuming no other financial recompense) I think you can only expect a proportional number of hours to yours. Partnerships are hard work and at this stage a separation (if necessary) gets harder the longer you leave it. Just be aware of the consequences to your company should you two decide to part ways.