The union that represents 1,200 El Camino Hospital workers formally kicked off an effort Wednesday to qualify a measure for the November ballot that would slash the pay of the health care provider's top brass. The proposed measure stands to affect as many as nine executives who each make more than $200,000 a year, not counting bonuses. One of the top earners is recently appointed CEO Tomi Ryba, who is to be paid at least $695,000.