The former are typically a group of second-class employees companies use as a way to "trial" someone before hiring them for real, or simply to skirt the requirements of employing someone full-time. They also tend to work for some shell company you've never heard of, at least on paper.
The latter tend to be older folks, and often experts in various fields. They also have little trouble finding another "gig" almost immediately after their current one dries up. These people are usually self-employed.
The former are typically a group of second-class employees companies use as a way to "trial" someone before hiring them for real, or simply to skirt the requirements of employing someone full-time. They also tend to work for some shell company you've never heard of, at least on paper.
The latter tend to be older folks, and often experts in various fields. They also have little trouble finding another "gig" almost immediately after their current one dries up. These people are usually self-employed.