Custodial and maintenance workers at the Calgary Board of Education (CBE) and the Calgary Catholic School District (CCSD) will be serving a 72-hour strike notice on Wednesday.In a statement sent Wednesday morning,

CUPE says the average Alberta school support worker makes $34,500 annually and many have gone almost a decade without a raise.

Calgary public and Catholic school workers, as well as those with the Foothills division south of the city and Black Gold and Parkland divisions near Edmonton all voted to strike.