Experts like Cacciatore explain that without giving parents sufficient time to grieve for their loss, companies and corporations will pay for it in the long run.

CNN: Father's campaign: More time off for grieving parents

It's natural and important to grieve the loss of the way you were.

CNN: Spinal cord injury

"Oscar specifically requested the memorial service as he continues to grieve and remains in deep mourning for the loss of his partner Reeva, " the Pistorius family's statement reads.

CNN: Pistorius to hold memorial for Steenkamp

Psychologist Dr. Wallace Sife, author of "The Loss of a Pet, " founded the organization and runs the certification program, which explains how people grieve the loss of a pet.

CNN: How to deal with the loss of a pet

So I want you to know that whenever a young American soldier or marine, sailor or airman is killed in conflict anywhere in the world, we, the people of Britain, grieve with you know that your loss is our loss, your families' sorrow is our families' sorrow and your nation's determination is our nation's determination that they shall not have died in vain.

BBC: In full: Brown's speech to Congress