Employers operating without workers' compensation insurance will be issued a STOP WORK ORDER by the Department of Industrial Accidents' (DIA) Office of Investigations and shall be assessed a minimum fine of $100 per day commencing on the date of the issuance of the STOP WORK ORDER and accruing until the date insurance coverage becomes effective and the fine is paid as authorized under MGL c. 152, s. 25C. In addition, the employer may be subject to criminal sanctions including not more than one-year imprisonment and/or up to a $1500 fine upon conviction. Uninsured employers are also subject to debarment from public contracts for a period of three years.