Workers in the Unison union in the Mid Yorkshire Hospitals NHS Trust have voted by 95 percent for strikes against redundancies and pay cuts.
The admin and clerical workers voted for action short of a strike by 98 percent.
Up to 40 workers face redundancy and 200 face pay cuts.
Pathology workers in the Unite union at Salford Royal hospital are balloting for strikes against planned moves to downgrade workers’ pay bands.
Workers could lose £6,000 in pay.
Unite union members working in blood transfusion services in Colindale, north London, are balloting for strikes.
Bosses want to close the Colindale site and transport blood samples from London and the south east to Filton on the south west coast for testing.
Unite members at Filton and Manchester will also be balloted. The ballot ends on 18 September.
Around 20 NHS workers protested outside North Devon District Hospital in Barnstaple last week against bosses’ plans to impose regional pay.
Bosses at several trusts across the region have banded together to attack pay.