PT. X bergerak di bidang jasa transportasi sudah menerapkan SML ISO 14001 sejak tahun 2014. Hasil observasi didapatkan beberapa titik lokasi tempat sampah terdapat sampah yang tercampur. Metode penelitian yang digunakan kombinasi kuantitatif dan kualitatif. Hasil penelitian menunjukkan terdapat hubungan positif antara pemahaman karyawan dengan perilaku peduli lingkungan. Terdapat hubungan positif antara SML ISO 14001 dengan perilaku peduli lingkungan. Terdapat hubungan positif antara pemahaman karyawan terkait lingkungan dan SML ISO 14001dengan perilaku peduli lingkungan. Kesimpulan penelitian terdapat hubungan yang positif dan cukup kuat antara pemahaman karyawan dengan perilaku peduli lingkungan. Terdapat hubungan positif dan cukup kuat antara SML ISO 14001dengan perilaku peduli lingkungan. Terdapat hubungan yang positif dan kuat antara pemahaman karyawan dengan SML ISO 14001 terhadap perilaku peduli lingkungan. Strategi yang diperlukan untuk meningkatkan perilaku peduli lingkungan adalah pengembangan sumberdaya manusia, membangun komitmen, dan sinergisitas antara perusahaan dengan pemerintah.

---

PT. X is a global leader in transportation services and had implemented ISO 14001 EMS since 2014. Through the observations, several trash cans contain mixed waste. The research method used was a combination of quantitative and qualitative. The results showed that there was a positive relationship between employee understanding and environmental care behavior. There was a positive relationship between the ISO 14001 EMS and environmental care behavior. There was a positive relationship between employees understanding and ISO 14001 EMS and environmental care behavior. The conclusion that there was a positive and strong enough relationship between employee understanding and environmental care behavior. There was a positive and strong enough relationship between ISO 14001 EMS and environmental care behavior. There was a positive and strong relationship between employee understanding and ISO 14001 EMS on environmental care behavior. Strategies needed to increase environmental awareness, build commitment, and synergy between companies and the government.