... employers and employees calculate contribution rates for Act 4 and Act 800.
Contribution Rates for Employees' Social Security Act (Act 4) and EmploymentInsuranceSystem (Act 800) Contribution Rates ...
... 1969 and EmploymentInsuranceSystem Act 2017 administered by PERKESO. The principal employers are also responsible for ensuring that all workers employed by immediate employers are registered with PERKESO ...
