Death in service cover, also known as group life assurance, pays a lump sum if a staff member dies while they work for you. Revenue allows an approved scheme to pay up to four times the employee's salary, plus a refund of any contributions they made themselves. For the employee it is a tax-free benefit.
Set up as a Revenue approved scheme, the premium is a business expense for the company and not a benefit in kind for staff. Cover is written on the whole group, so each person is covered up to an agreed non-medical limit without health questions. That matters for an older employee, or someone with a condition that would make cover hard to buy alone.