I'm currently negotiating with two potential employers, one of them one of the bigs. It would be great if they would pay me to learn at work, but I don't feel like I'm in a position to ask for that — that's an industry=wide problem. So I'm trying to hack the system to get fewer hours: 30-32 per week. That gives me enough time to self-study, handle some of my own training and overdeliver, yet still have a life. I have…
Voice of experience: Companies are incapable of thinking this way. Instead, take the 40 and simply siphon off 8-10 for your personal education. As long as you're not actually working for a different company during this time, it's all good. If company doesn't like it, move on.
For example, if you're doing daily standups, then one hour of an 8-hour workday is doable. But if you want to learn something that requires from time to time that you concentrate deeply for a longer period of time, say 4 hours, then that's half a workday, which may well show on daily standups.
If you have a manager who has a tendency to show up at your desk unannounced and they glimpse you watching a video, they probably won't say anything or ask what you were watching, but may walk away having mentally applied a discount factor to what they think your rate of productivity might be.
Also, while siphoning-off may work well in a good culture of consistent non-rushed problem solving, it may not work so well in a culture where it's constantly management by crisis. Like tomorrow may be the deadline for delivering something in the context of a crisis. The crisis may be entirely made up, but you would still end up looking really bad if you didn't deliver. Then you're probably not going to spend an hour learning that day if you know there's a risk you will have to stay at the office for an hour longer as a result.