I apologize if this has been asked/discussed before- I am curious for those who have successfully moved from full to part time in the same position or those who are thinking of proposing this, what did you propose happens to the time that you're eliminating? It disappears, you get more done in less time for less pay, it shifts to a different person, etc??? This is my biggest obstacle, I can't really justify it if there is nowhere for that time to 'go' if that makes any sense.
Re: s/o on the switching to p/t topic
Mine was a bit easier because we happened to lose a large portion of my portfolio shortly before I went on maternity leave. That being said, my workload ebbs and flows and I went from salary to hourly so when needed I pick up additional hours. I work in a traditional corporate job so I suggested a trial period and I make a point of being available. When my kids were younger I paid for extra care so that I could make meetings on my 'off' times. Now my kids can play independently if I need to answer an email at 5:00 or in a pinch I have a neighbor that will come by if I have a call late in the afternoon.
I will say that PT is easier for me because I WFH but I am seeing more people do PT. People tend to do 32 hours with Friday off. And also, while management doesn't like to hear this, I think it is true that people's time seems to fill the space allotted so generally most people are able to do more in less time.
This may or not help you as my situation was somewhat unique and my company is in a constant state of flux so it is easy to shift things around.
I started FT at this job reporting to the CAO and had a person reporting to me who manages a team. The person reporting to me really deserved a promotion and I was trying to get him more money outside of my own wish for a change in schedule. I also have some very technical responsibilities that I have always handled on my own.
So I pitched that we would carve out the more technical areas of my job for me to keep. The person reporting to me would now also report to the CAO and they would use some of the money they were saving by me going PT to give him a bump in pay. I still get involved in some aspects of the department management, but not nearly as much as I did, as my former employee was perfectly capable of handling most of it.
It has for the most part worked out well and my company is not a fan of PT arrangements. I did get a new boss after the boss I originally worked this out with, and he has been much harder to keep happy with my PT status but I am still here so...
I do have to keep my cell phone on me on my days off and check in periodically to answer questions, etc.
At my old company we had two managers who wanted to go PT so they set up a job share arrangement and hired a second person to replace one FT position, if that makes sense.