Negotiations between the Ontario Nurses Association (ONA) and the Windsor Essex County Health Unit will continue on Monday.
Talks wrapped up around 2 p.m. Friday on day 22 of the labour dispute.
ONA Local 8 says its 86 members were disappointed a deal could not be reached.
The Ministry of Labour will be at the bargaining table on Monday to help the two sides reach a deal, wages remain the key issue.
— With files from AM800's Kathie McMann