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Webster 1913 Edition

Adj.

Doing chance work or odd jobs;

as, a

jobbing

carpenter

Using opportunities of public service for private gain;

as, a

jobbing

politician

London Sat. Rev.

Jobbing house

a mercantile establishment which buys from importers, wholesalers or manufacturers, and sells to retailers.

[U.S.]

jobbing

present participle of job
The jobbing foundryman has very little control over the nature of the jobs which come his way.

jobbing ‎(plural jobbings)

A temporary or contract post of employment.
- 1849, The Lancet London
  We have not lost sight of the various proceedings, appointments, jobbings, &c, at University College.

a temporary or contract post of employment