Wiktionary
n. 1 A business or facility specializing in the manufacture or fabrication of parts in relatively small quantities, produced to the specifications or requirements supplied by the customer. 2 (label en production management) A production unit that processes jobs each of which requires processing at multiple workstations, in any order, which processing may vary in time taken at each workstation. 3 An agency that supplies technical personnel usually on short-term temporary contracts.
Wikipedia
Job shops are typically small manufacturing systems that handle job production, that is, custom/bespoke or semi-custom/bespoke manufacturing processes such as small to medium-size customer orders or batch jobs. Job shops typically move on to different jobs (possibly with different customers) when each job is completed. In job shops machines are aggregated in shops by the nature of skills and technological processes involved, each shop therefore may contain different machines, which gives this production system processing flexibility, since jobs are not necessarily constrained to a single machine. In computer science the problem of job shop scheduling is considered strongly NP-hard.
A typical example would be a machine shop, which may make parts for local industrial machinery, farm machinery and implements, boats and ships, or even batches of specialized components for the aircraft industry. Other types of common job shops are grinding, honing, jig-boring, gear manufacturing, and fabrication shops.
The opposite would be continuous flow manufactures such as textile, steel, food manufacturing and manual labor.
Usage examples of "job shop".
We toyed with the idea of setting ourselves up as a subcontracting job shop, specializing in working with hard to cut materials, but the same problem was there.
Well, they'd had an advert in Mr Keeble's job shop for months now.
I don't think there's a job shop in the country that could handle that stuff.