I have worked as a freelance developer for a startup for 22 months. I have a weekly meeting with my manager for 1 hour, so 4 hours per month.
Since I started this freelance work, I never added these meetings to my hour sheets. I suppose that I never really thought about the meetings as hours-worked for the company (this is my first time freelancing). The recognition finally hit me when having a meeting with another employee, for which I was compensated.
The total 'missed' hours at this point is 90, which is a pretty big number considering that I work part-time about 30-40 hours per month.
I would like to pitch to my boss that I would like to be compensated (retroactively) for these hours, but it's my fault for never logging the hours so I feel that I may not have any right to compensation at this point. Furthermore, it would be a decently large sum of money that would be paid all at once, as opposed to spread over 22 months as it should have been, so that may cause problems for my employer even if they wanted to pay me.
Do I have any right to ask for retroactive payment, considering that I forgot to log the hours? Should I ask for compensation? If so, is there a preferred method for asking?