Dismissal of cassation: invalid dismissal claim arises from lack of drunkenness proof, not employer's failure to specify cause.

The Supreme Court dismissed the employer's cassation appeal against a labor court ruling that declared the employee's dismissal invalid. The labor court found the employee was not drunk at work, making the dismissal unjustified under Article 45 of the Labor Code, despite the employer's vague reasoning under Article 30. The Supreme Court upheld this decision, ruling that the dismissal was invalid because the employer failed to prove the statutory ground of drunkenness, regardless of procedural flaws in specifying the cause.