There is no law that requires a business to provide for bereavement leave. It is a benefit, and entirely up to the employer whether to provide for such leave at all, and if so, for how long, whether it is paid or unpaid, how wide to cast the family net, and whether to require an employee to provide proof of the death. How you choose from this menu of options will all impact employee morale, retention, and maybe productivity (although I question the agenda of the Grief Recovery Institute). As always, when you apply a bereavement leave policy, make sure it applied fairly and equally across the board to avoid any appearance of disparate treatment and a potential discrimination claim.