Update: I went to the ministry
Of labor in Bangkok and idk how “official” this is but the staff there said there is a new law that the employer must cancel the work permit or else they will be fined. They said that even if I have the physical copy, I still cannot
Cancel it myself. (Which sucks)
Side note: my permit was still active.
TLDR : Answer Summary
An update from the Ministry of Labor in Bangkok indicates a new requirement: employers must now cancel work permits or face fines. Individuals cannot cancel their permits even if they possess a physical copy. This change emphasizes the employer's responsibility in the cancellation process. Insights from other regions like Phuket suggest a similar enforcement of these rules, highlighting the importance of clear communication between employees and employers regarding work permit status.