As used in this article, the following terms
shall have the meanings indicated:
IMMEDIATE FAMILY
Spouse, child, stepchild, parent, stepparent, brother, stepbrother,
sister, stepsister, grandparent, father-in-law, mother-in-law, sister-in-law,
brother-in-law, half-brother, half-sister, nephew or niece.
This article is not intended to apply to immediate
family member relationships between or among employees which were
created or existed prior to July 15, 2005.