H-1B sponsorship profile: Middlesex Corporation. Across U.S. Department of Labor LCA disclosures, Middlesex Corporation filed 7 Labor Condition Applications covering 7 H-1B worker positions between fiscal year 2023 and fiscal year 2025. The employer’s DOL certification rate sits at 100% (7 certified of 7 filed), a useful proxy for how cleanly their prevailing-wage attestations pass the Labor Department’s preliminary review before USCIS adjudication.

Compensation spread. Offered wages on Middlesex Corporation’s H-1B petitions range from $65,000 at the low end to $75,878 at the high end, with a petition-weighted average of $71,187. That range reflects the mix of occupations the company sponsors, led by Field Engineer (3 petitions at $72,477 avg), followed by Project Controls Engineer and Mechanical Engineer. H-1B salaries reported on LCAs must meet or exceed the DOL prevailing wage for the role and worksite, so the spread also tracks wage-level geography and seniority.

Geographic footprint. Middlesex Corporation is headquartered in Littleton, MA under NAICS code 237310, and places H-1B workers across 3 states, most heavily in CT, FL, MA. Combined, these signals give a granular view of how one employer uses the H-1B program, volume, approval cleanliness, wage posture, and where the jobs actually sit on the map.

Where Middlesex Corporation ranks. By H-1B petition volume, Middlesex Corporation is #21,197 of 119,880 employers nationally and #921 of 5,193 employers headquartered in MA. Both ranks are computed live from the same underlying petition counts, not a separate estimate.