Worker's Compensation law requires coverage to be cancelled only upon proper notice. See Pennsylvania National Mutual Casualty Insurance Company v. O'Berry, 184 Ga. App. 606, 362 S.E.2d 157 (1987).
The Supreme Court ruled that failure to file a "B" card was only evidence of coverage and because subsequent coverage made by another carrier, there was evidence that they were off the coverage. Reversed several other cases. See American Centennial Insurance Co. c. Flowery, 258 Ga. 222, 367 S.E.2d 788 (1988).