I think hosts/employers need to be realistic about how alluring what they are offering is, as compared to what else is out there for people to learn and experience. Sites like WorkAway and HelpX often offer room and board for 5 hours/day 5 days/week in beautiful settings, where the volunteers gain experience and skills in areas that interest them. On top of that, they get a cultural exchange, as many are often from out of state or from abroad, and the host families take time to engage them in their lives and communities.
The majority of ag workers in the US are minorities and foreign nationals who come in to work in horrific conditions, oftentimes at great risk to their health and wellbeing. United Farm Workers (
https://ufw.org) fight for the rights of those farm workers, who aren't paid either minimum wage or overtime, often with backbreaking, long hours in the summer, and little work in winter. Personally, that isn't a system I want to either support or emulate when I invite people to join me, and I do think that Ag workers should get minimum wage, or job training for a future they want, but I also take a lot of responsibility for helping them gain knowledge in exchange for their hours.
I do host volunteers, but it is with the understanding that aside from room and board, they are gaining skills that they are directly interested in. Before they arrive, they let me know why they want to come to my place, based on my profile and what projects I am currently working on. Also, what skills or work ethics they currently have, and what they hope to gain by being here. I take time to show them how to do things, put it in context of permaculture, ecology, policies and food forest
gardening, to name a few.
Doesn't matter if it's digging ditches or roofing, it's all done for a reason of building more resilient systems, and I explain not only how to do it, but why and how it fits into the long term goals.
I've also seen and experienced hosts who make people do repetitive, menial chores day after day, not adding to their knowledge or skills, and not giving any context of why those chores must be done, basically treating them as expendable, and showing little respect for the time and effort the workers are putting in. I try to be a different kind of host, and that has given me a lot of return helpers, who not only come back themselves, but bring their partners, their parents, their friends and so on... it's important to me to build community and to help the people who pass through realize their potential and their dreams, and if there's a clear shared goal to achieve, most often the people coming to your place will put in the extra effort to help you make it come true.
However, they really do need to be gaining the skills I've offered to teach them, or I feel I would just be using them for cheap labor.
Of course, it does take time to train someone. I always have tasks to be done most anyone can do, such as mowing the
lawn, raking the grass, making
wood chips, crushing sea shells, picking slugs, stacking bricks, painting, sweeping the bigger buildings, carrying water and so on. I let the people who come here know what we're currently working on, what we're trying to achieve short and long term, what projects I need help with, and what they can fall back on doing whenever they're not sure what to do. That way, they own a little project, and feel they can contribute even when not doing the bigger things.
Then there are the projects I teach them to do, and this is where my preparation and planning come in - I put lots of time and effort in, and I also gain a lot from those who come to help by setting things up this way. While I do still get the occasional dud, I've become much better at nipping those in the bud through a thorough interview process, and most of our volunteers have a great time, contribute, learn, and want to come back again. And when they do, they bring the knowledge they gained, and understanding of the place with them.
To me, that is success.