Fair, transparent and merit-based consideration for promotion forms an essential facet of the right to livelihood, and thus, of right to life itself—Where civil servant meets prescribed qualifications and conditions for promotion, lawful and transparent consideration of their case creates a legitimate expectation that such progression has to materialize unless cogent reasons to the contrary exist—Denial or indefinite deferral of such consideration, particularly when based on arbitrary, opaque, or shifting grounds violates such expectation and reduces Constitutional guarantees to mere rhetoric.