Just started a new game, and assigned a carpenter. It was night, and the carpenter returned to the camp fire. I then told them to place a workstation, in which they didn’t do anything. So I tried again, and went and did other things. When I came back, she had build two work stations, and both were usable, as well as separate building cues.
AMD Phenom II X4 965 Processor, ~3.4GHz
16 GB PC3-12800
AMD Radeon HD 7770 (x2)
Crucial 256GB M4 SSD