Contract labour compliance return requires half-yearly electronic reporting of wages, social security details, and employment records. Contractors must submit a half-yearly return electronically in Form XVIII for January to June and July to December to the Deputy Chief Labour Commissioner (Central). The return captures the contractor's and principal employer's details, LIN and licence particulars, the contract work and location, and month-wise information on contract labour employed, wages paid, overtime, bonus, wage bill received, ESIC and EPF ECR numbers, and whether wages were paid by the prescribed due date, together with remarks, signature, and date.