The great majority of care home residents have had the booster jab.
Absenteeism among care home workers has also shot up.
Care homes have been a priority for disinfection.
The fines total some 300,000 euros.
Vaccination in care homes started on December 27.
The health ministry has intervened at some cares in Mallorca.
The health minister was challenged in parliament about the adequacy of care home protocols.
Protesters gathered outside Palma town hall on Monday.
Relatives were highlighting the situation at two care homes in particular.
The Balearic health service has intervened at a number of care homes.