Bias...

Age bias can be subtle, or it can show up in more overt behaviors such as hiring discrimination.

New research shows that age bias doesn't affect men and women equally. In fact, older men face harsher discrimination than older women. 

The stereotypical version of worker past retirement age, sowing discord among younger employees who covet the senior position  is usually male.

This "intersectional escape," the phenomenon by which older women seem to escape age-based penalties, is actually rooted in sexism.

Younger employee view older, dominant women as maternal or caring, even if they behave in an assertive way. But these same employees instead see older men as overly aggressive and hostile to younger workers' success. Just a thought.