I feel HR professionals in organizations should try to do leave analysis. I mean what do people take leave from work for and try to link it to their performance, it may provide interesting insights on how individuals balance their lives and also what matters to them beyond work. Be it health, recreation, ailing parents, kids, open house in schools that their kids attend etc etc.
May be it would serve to understand employees better. To know the deeper motivations of the person. I don't know if any organization actually does it.
The underlying essential should be: employees should be fearless and transparent in expressing the reason for leave.