Most commonly these difficulties were attributed to a lack of interest in the work in question, a factor in three-fifths of all establishments with retention difficulties.
Y rheswm mwyaf cyffredin am yr anawsterau hyn oedd diffyg diddordeb yn y gwaith dan sylw, ac roedd hynny'n ffactor mewn tri o bob pum sefydliad a oedd yn cael trafferth cadw staff.