Proof of claim by workman establishes employee claim submission in voluntary liquidation under the applicable insolvency regulations. Proof of claim by a workman or employee, designated Form D, is the prescribed format under the Voluntary Liquidation Process Regulations for submitting employment-related claims. It implements the procedural mechanism in Regulation 18(1) by providing an official statement of the claimant's entitlement for the liquidator's consideration in the liquidation process.