The burden of proving intoxication as a defense is on the employer. Johnson v. Hahn Bros. Const. Inc., 188 Neb. 252, 196 N.W.2d 109 (1972).

Mere negligence of employee is not sufficient to preclude recovery, but such conduct must be shown as manifests a reckless disregard of consequences coupled with a consciousness that injury will naturally or probably result. Richards v. Abts, 136 Neb. 741, 287 N.W. 199 (1939).

Burden is on employer to establish willful negligence, and he must prove a deliberate act knowingly done or conduct evidencing reckless indifference to his own safety on part of employee. Hoff v. Edgar, 133 Neb. 403, 275 N.W. 602 (1937).