Nine trade unions are a member of Gildi. All employers with operations in the professions for which the nine unions have entered into collective wage agreements are under obligation to pay the pension premiums of their employees to the Gildi mutual pension division.
In addition to the nine unions, the Confederation of Icelandic Employers is a member of Gildi.
The premiums are paid in the proportions specified in the relevant collective wage agreement. Membership in Gildi, therefore, is mandatory, and making payments into mutual pension divisions of other pension funds is not permitted.