SIPTU is calling on the government to take action on zero hour contracts in the health sector.
The trade union claims some voluntary organisations - which are funded by the tax payer - are not providing set hours of work or are spreading minimal hours across the week.
SIPTU says the issue has been raised amongst their members who are home help workers in the Dublin and Wicklow areas in particular.
Health Division Organiser Paul Bell says they believe it affects one quarter, of the three thousand employees in the sector:
