In Italy, the thirteenth salary was regulated by law after its introduction during the 1930s.

The thirteenth salary is paid to employees according to different terms of law or contract of employment.

Germany and Austria have no unitary regulation, and the thirteenth salary is mostly regulated in the collective agreement.

In the Philippines, a thirteenth salary, known as thirteenth month pay, is mandated by the Labor Code of the Philippines to be given in December to permanent employees.