I've seen this topic come up on other craft business forums from time to time. The key seems to be to trial and error til you find a small core of reliable people that like to work this way, and to be flexible because everything can change in a heartbeat.
Some suggestions I've seen have been students in arts & crafts programs at local schools or organizations (like a local craft guild), retired people, and at-home mothers who would like a little handiwork and some extra cash, but who can't commit to a full-time job.
Some people had good results from posting a notice at public places like supermarkets, libraries, craft stores (in your case, perhaps a local bead store?) Others swore by word-of-mouth--get the word out to all friends and acquantances that you are looking for people to do this (including that bead store owner!)
I was intrigued that, in all the discussions on this topic, there was only one common element--it's really, really hard to find good (that is, reliable) people, and when you do, you can lose them any time. They move away, they need more $$ and a "regular" job, they start their own craft business, they get bored. So however you recruit, be prepared to do it all over again at the drop of a hat. If you do find a core group, thank your lucky stars and enjoy it while it lasts! :^)
Most people agreed that piecework payment was best (paying by the amount of work or number of pieces completed) rather than an hourly wage, but to constantly check on quality.
Everyone stressed the importance of being very clear what was involved, although they also moaned that employees hear what they want to hear. Invariably, an applicant who swore they would love to do repetitive tasks such as stringing, painting, or whatever, would later complain that they were bored and wanted to do something more interesting.
Again, this is passing on what I've read, not personal experience. We have a severe labor shortage in my area, so I decided from the onset of my business not to create a model that depended on outset labor.
Hope this helps,
Luann