Casual Negligence Law and Legal Definition

Casual negligence means slight negligence or, at most, no more than ordinary negligence. It is failure on ones part to use due diligence. [Baltimore & O. R. Co. v. Henthorne, 73 F. 634, 640 (6th Cir. Ohio 1896)]

Liability does not ordinarily extend to casual negligence. [Nationwide Mut. Ins. Co. v. Philadelphia Electric Co., 443 F. Supp. 1140 (E.D. Pa. 1977)]

However, a party seeking indemnity must be free from active or casual negligence. [Stroh Brewery Co. v. Grand Trunk W. R. Co., 513 F. Supp. 827, 833 ( E.D. Mich. 1981)]