Setiap pekerja yang aktif dalam ranah Keselamatan dan Kesehatan Kerja (K3) mutlak memastikan keabsahan dokumen kompetensi mereka. Masa berlaku dokumen seperti sertifikat, SKP (Surat Keputusan Penunjukan), dan lisensi dari Kemnaker RI memiliki batas waktu tertentu yang harus diperhatikan. Melakukan perpanjangan sebelum masa aktif berakhir bukan seka

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