More than 40 tenants, including families, in three Kildare towns have received notices to quit because landlords say an Eastern Health Board dispute has blocked their rent allowances.
Community welfare officers have refused to pay rent or mortgage allowances to about 2,000 people in the county for almost three weeks.
The health board says cheques for rent will be delivered on Monday by post or by hand.
Meanwhile, the Citizens' Information Centre in Newbridge has urged people receiving notices to quit to go to the Law Centre immediately for legal assistance. It has also urged tenants and mortgage-holders not to go to moneylenders for funds to pay off arrears.
In a dispute over security, community welfare officers have refused since January to have face-to-face contact with the public. People seeking supplementary welfare allowances or emergency help must apply by telephone to their county headquarters in Naas.
One local community worker said applicants have found it hard to get through on the telephone.
The health board says it hopes to make progress at a meeting on Monday with the community welfare officers who are dissatisfied with arrangements for their safety.
"In the meantime arrangements are in hand to ensure that rent and mortgage supplements are paid on time," says an EHB statement.
The health board was adamant that it had made arrangements to pay rent and mortgage supplements. Any difficulties tenants or landlords may have will be dealt with by the board, a spokeswoman said. She urged them to contact the health board customer service department at 1800 52 05 20 on Monday.