Perlindungan Hukum Bagi Pekerja Terhadap Adanya Klausula Pemutusan Hubungan Kerja Secara Sepihak Tanpa Ganti Rugi Dalam Perjanjian Kerja Waktu Tertentu Pada PT. X = Legal Protection for Workers Against the Existence of a Clause of Unilateral Termination of Employment without Compensation in a Certain Time Work Agreement at PT. X