[P class=MarginalNote]I am assuming you live in BC.
[P class=MarginalNote]From the BC EMPLOYMENT STANDARDS ACT:
[H4 class=MarginalNote]Family responsibility leave[/H4][P class=IndentLevel1]52 An employee is entitled to up to 5 days of unpaid leave during each employment year to meet responsibilities related to
[P class=IndentLevel2](a) the care, health or education of a child in the employee's care, or
[P class=IndentLevel2](b) the care or health of any other member of the employee's immediate family.
[P class=IndentLevel1]"immediate family" means
[P class=IndentLevel2](a) the spouse, child, parent, guardian, sibling, grandchild or grandparent of an employee, and
[P class=IndentLevel2](b) any person who lives with an employee as a member of the employee's family;
[P class=IndentLevel2]I would suggest you give Employment Standards a ring at 1 800 663-3316 (toll-free in British Columbia) as ask them if this provision would extend to your in-laws. If it does, you can't be fired for taking the time off.