Mandatory sickness insurance excludes voluntary coverage and prevents receiving two maternity benefits simultaneously.

The Supreme Court dismissed the applicant's appeal, overturning a lower court decision that granted her a second maternity benefit. The applicant argued she was eligible for dual coverage because she simultaneously held a mandatory employment contract and a voluntary business insurance policy. The court ruled that mandatory sickness insurance automatically excludes voluntary coverage for the same period, thereby preventing the receipt of two separate maternity benefits for the same event.