Outsourcing and kerja borongan, or contract work, was one of the most controversial issues in the new Manpower Law. ...
http://www.insideindonesia.org/feature-editions/women-in-tra...

http://books.google.co.id/books?id=0PV0NSjCdFAC&pg=PA255&lpg...

http://books.google.co.id/books?id=cF97F--suNAC&pg=PA490&lpg...


--------------------------------------------------
Note added at 26 mins (2014-01-24 01:47:45 GMT)
--------------------------------------------------

Referensi tambahan:
... If the work is borongan (contract work) in nature, the wages of the ...
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&c...

http://books.google.co.id/books?id=rDRRU4_-56sC&pg=PA39&lpg=...

http://books.google.co.id/books?id=xeeELyNhkdMC&pg=PA27&lpg=...

www.twnside.org.sg/title2/.../TWR.161-162.doc‎

konsep kerja borongan juga dikenal dalam bahasa Inggris dengan istilah "lump sump"

http://kateglo.com/?phrase=borong&mod=glossary

A lump sum contract is an agreement in which one party consents to pay another party a set dollar amount for completing the work or providing the goods described in the agreement.
This type of contract is regularly used for a variety of transactions, including construction work, consulting projects, and architectural assignments.

http://www.wisegeek.org/what-is-a-lump-sum-contract.htm

A lump sum contract is a great contract agreement to be used if the requested work is well-defined and construction drawings are completed. The lump sum agreement will reduce owner risk, and the contractor has greater control over profit expectations.

http://construction.about.com/od/Procurement-Process/a/Lump-...

Piece work (or piecework) is any type of employment in which a worker is paid a fixed piece rate for each unit produced or action performed regardless of time.

--------------------------------------------------
Note added at 6 hrs (2014-01-24 07:58:46 GMT)
--------------------------------------------------

Yang lebih sering digunakan adalah Piecework (digabung). Dalam kamus Oxford Advance Learner, kata Piecework (digabung) dapat dijumpai.