The IRD will inform your employer to dudece the outstanding tax from your salary and ask your banker to transfer money from your account to settle the outstanding tax payment!
You can take with IRD for instalment payment of your outstanding tax.
The IRD is empowered to ask your employer to forzen your pay (not only attributable to your 公積金及長期服務金 but even your monthly salary) and pay the IRD first before your employer pays you.
Also, there is surcharge on overdue tax payments. Therefore, it would be wise to sort out a payment scheme with the IRD yourself before they take any recovery actions.