Why would they have to pay you a cool sum of money for it? It sounds pretty clearly like you did it for work, so unless you have a very unique employment contract, they already own it.
If I use my own time to make something, work isn’t getting it without paying for it. I don’t care what the contract says about personal projects (although I‘ve also never signed one of those “we own everything you do outside of work” clauses because I find them exploitative and abusive)
Me too. I always ask that it be removed from the contract, and so far, it always has been.
Since I left that place and I believe most of my time-limited terms have expired, IP is one of the very few things I'll get caught up on with a contract. I'm flexible around hours, reporting, attire, presence, etc, but IP outside of specifically client-related work activities is where I draw the line.
I am a digital creator on my own time, I always have been since I was a child, I draw inspiration from many sources, whether it's work or books or videos or art, or even just a random thought. The notion that one day one of these things randomly becomes successful and a bevy of previous clients lays claim to the fruits of my labour sickens me to the core and goes against every sense of living in a fair and just society.
I've knocked back clients who refuse to budge on this issue. I'm no Bill Gates or whatever, but there's absolutely no way I'm signing over rights to things I invent or innovate on my own time. If the people I work for want access to that additional service beyond whatever monkey-shit I'm doing for them then they can pay for it and not just swipe it through some boilerplate IP clauses.
But in terms of building it on personal time, I'm iffy on that. Obviously in tech the time tends to blend together... I've worked on weekends but also spent half a day doing personal stuff when I'm WFH and I have very little on my plate. It seems to me like the more relevant fact is that he clearly built this for his job - to me, that makes it feel like this is a situation where the employer claiming ownership isn't abusive at all. If he never would've built this if not for being employed at that job, and he used it primarily in that job, isn't it fair to say he made it as part of the job?
If I’m meeting my contactual obligations, anything more is mine. If I go above and beyond, then that is, essentially, a gift from me to the company, because I’m only compensated for what the contract says I’m compensated for.
If I spend my leisure time to build something that makes my job easier, I see that akin to using the time to go to the gym or get more sleep because that also makes my job easier. If it’s my leisure time, what I do is my business even if it helps my work.
Of course we don’t know when this person built the tool and maybe it was done in a less clear way. I always try to keep things I do for myself clearly separate. Eg if I’m WFH and the last hour is quiet maybe I’ll also put some food on while I finish work, but I would never use that time to work on a personal project but rather wait until I’m clearly clocked out.