Ontario Premier Doug Ford has blasted employers of migrant farm workers who have been slow to have their workers tested for COVID-19.
But he also relaxed rules to allow those who test positive, but are not feeling ill, to continue working outdoors, provided they keep their distance from others.
There have been suggestions that migrant workers are reluctant to be tested lest they lose employment are sent home.
The province has also persuaded health units in Windsor-Essex to send mobile testing units to where migrants are working.
More than 600 migrant farm workers in Ontario have tested positive and three have died.
About 10 per cent of results that have come back so far were positive.
Leamington and Kingsville are now the only places in Ontario where lockdown regulations remain fully in force.