Among the various maritime labor disputes handled by Labor Arbiters, claims for permanent total disability benefits are arguably the most technically complex. At the heart of these disputes is a specific, strict chronological timeline: the 120-day versus 240-day medical assessment rule.

When a seafarer is medically repatriated due to an injury or illness suffered on board, the POEA Standard Employment Contract (POEA-SEC) mandates that they undergo medical treatment at the expense of the company. The law gives the company-designated physician a primary window of 120 days from the date of repatriation to issue a final medical assessment determining whether the seafarer is fit to return to sea or suffers from a permanent disability grade.

A common error made by seafarers is assuming that if no final assessment is issued exactly on the 120th day, they are automatically entitled to maximum permanent total disability benefits. The Supreme Court has clarified that if the seafarer’s condition requires further medical intervention, the company physician can extend the treatment period up to a maximum of 240 days, provided a timely interim medical report is issued justifying the extension.

If the company doctor issues a final assessment within the proper timeline, but the seafarer's independent doctor disagrees, the parties must activate the mandatory Third Doctor Rule. The choice of a third, mutually agreed-upon physician is a critical contractual step. Failure by either party to navigate these precise medical timelines cleanly can completely invalidate an entire claim or defense before the NLRC.