As things stand there is a risk that these sectors will not be able to sustain jobs for future generations and provide fair, safe and secure jobs to large parts of the population.
Fel y mae ar hyn o bryd, mae risg na all y sectorau hyn gynnal swyddi ar gyfer cenedlaethau'r dyfodol na darparu swyddi teg a diogel i rannau helaeth o'r boblogaeth.