This is the 2577th most frequent Korean word.
보장해야
"보장해야" means "must guarantee" or "must ensure."
The word '보장해야' is used here to denote an obligation or necessity to ensure safety.
안전을 보장해야 합니다.
Safety must be guaranteed.
In this sentence, '보장해야' highlights the responsibility to guarantee welfare.
회사는 직원들의 복리를 보장해야 합니다.
The company must ensure the welfare of its employees.
Here, '보장해야' is used to signify the duty to ensure human rights.