Short answer. Yes. Under Article 183 of the Labor Code, the employer's duty to pay the monthly contribution ends only at the end of the month the employee is separated -- the month of contingency. That means the contribution for the month you were terminated is still owed; the obligation stops only for the months after that.
What the law says
When a covered employee dies, becomes disabled or is separated from employment, his employer’s obligation to pay the monthly contribution arising from that employment shall cease at the end of the month of contingency and during such months that he is not receiving wages or salary.
Labor Code, Article 183 — Employer Pays The Contributions. Read the full provision →
When the employer's obligation actually stops
Article 183 does not cut off the contribution the moment separation happens mid-month. It fixes the cutoff at the end of the month of contingency -- the month in which the employee dies, becomes disabled, or is separated from employment. Being terminated on the 10th, the 20th, or the last working day of the month all fall within that same month of contingency, so the employer's obligation for that entire month is not erased by the fact that employment ended partway through it.
Why the contribution is still owed for that month
The article's own wording only stops the obligation at the end of the month of contingency, which is a forward-looking cutoff, not a retroactive one. Read plainly, the employer's duty to remit the one-percent-of-monthly-salary-credit contribution for the month in which termination occurred is unaffected -- what stops is the obligation for the months that follow, once the employee is no longer receiving wages or salary from that employment.
The contribution is the employer's alone
It also matters that this is not a deduction the employer can pass on to the departing employee. Contributions under this Title are paid in their entirety by the employer, and any arrangement to deduct any part of it from an employee's wages or salary is void. So even for a partial final month, the contribution obligation -- to the extent it applies -- sits with the employer and cannot be charged against the employee's last pay.
What this does not resolve
Article 183 speaks to the employer's contribution obligation, not to whether a particular claim or benefit is payable for an incident that happened around the time of separation -- that depends on coverage and the nature of the contingency itself. If a dispute arises over whether a contribution was properly remitted for the month of termination, that is exactly the kind of matter the System has jurisdiction to settle, with a right of appeal to the Employees' Compensation Commission.