I'd include this as a catch-all description; though homeworking could overlap with some of the other categories

Two results from Eurodicautom:

artisanat

Reference Frankl,Dict.de droit social,1970
EN
Definition a work that requires both manual and artistic skill

Reference The Concise Oxford Dict.of current English,Ninth ed.,Clarendon Press,Oxford,New York,1995
(1)
TERM handicraft

Reference Collins English Dict.,3rd ed.,1991

Note {DOM} economics:productive activity
{GRM} n.
(2)
TERM handcraft

Reference Collins English Dict.,3rd ed.,1991;The Concise Oxford Dict.of current English,Ninth ed.,Clarendon Press,Oxford,New York,1995

Note {DOM} economics:productive activity
{GRM} n.

entreprise artisanale

Reference European Investment Bank,Technical Gloss.,1991

Note {DOM} économie:constitution de société-liquidation-rachat
{GRM} loc.f.
EN
(1)
TERM cottage industry

Reference European Investment Bank,Technical Gloss.,1991
(2)
TERM craft undertaking

Reference European Investment Bank,Technical Gloss.,1991

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Note added at 23 mins (2006-03-20 11:27:56 GMT)
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The English might read: ... may not engage in any business, handicraft (or cottage industry) or professional activity...

or craft activity - no need to make it more complicated, imho

This refers to an occupation done at home and is selective in differentiating it from a commercial activity (activite commerciale) done within the premises by the lodger. Usually handicraft for no money or less.