Calling out sick implies using voice and not text to message their sickness, which is also analysis.
"Workers are using sick days, and businesses do not have enough workers not on sick days" is a plain jane version
"Workers are using sick days, and businesses do not have enough workers not on sick days" is a plain jane version
I think people are so accustomed to clickbait-y headlines, they see an agenda in the headlines of an organization that actually practices strong journalistic standards and plays it "safe" with its headlines, saying less than more.