The Seafarer Act Article 39

Except the seafarers agree the transfer of serving ships owned by the same employer, the employer, who terminates employment contracts in accordance with Paragraph 1 and proviso of Paragraph 3 of Article 22, or the reasons not attributable to seafarers, shall give severance pays based on the followings criteria:1. For seafarers paid on monthly basis: a three-month severance pay based on the average wage.2. For seafarers paid on voyage basis: the full amount of remuneration.3. For seafarers having worked consecutively for three years on the ships owned by the same employer: in addition to the payment made in accordance with Item 1, one-month severance pay based on average wage for every one year from the fourth year. The working year less than one full year shall be computed on a pro rata basis, and less than one full month shall be computed as one month.
中文原文 船員法第39條
雇用人依第二十二條第一項、第三項但書或非可歸責於船員之事由終止僱傭契約時,應依下列規定發給資遣費。
但經船員同意在原雇用人所屬船舶間調動時,不在此限︰一、按月給付報酬者,加給平均薪資三個月。
二、按航次給付報酬者,發給報酬全額。
三、船員在同一雇用人所屬船舶繼續工作滿三年者,除依第一款規定給付外,自第四年起每逾一年另加給平均薪資一個月,不足一年部分,比例計給之,未滿一個月者,以一個月計。

English translation for reference only; the Chinese text prevails. Not legal advice.