Business Service Company

Diamond Peo

Professional employer organisation handling HR, payroll, benefits and workers compensation for businesses in the United States and Canada

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TrustList summary

Diamond Peo is a professional employer organisation (PEO) that handles HR, employee benefits, payroll and risk management. It serves clients across the United States and Canada, whatever their industry or size.

Products and services

HR services: human resources support, with customised solutions for each business.
Employee benefits: employee benefits handled as part of the service.
Payroll processing: payroll handled on an outsourced basis.
Workers compensation programmes: national buying power for workers compensation rates, with compliance, audits and certifications handled by the company.
Staffing company programmes: workers compensation programmes designed for staffing firms.

Who it works with

Businesses of any industry and size, with a particular focus on staffing companies, which the site says depend heavily on their workers compensation programme.

Key facts

Coverage: United States and Canada
Underwriter: United Wisconsin Insurance Company

Summary written by TrustList from the business's own published information, Oct 2026.

Categories & features

Rankings

Diamond Peo is ranked on 2 TrustList rankings: #9 on 1 and #37 on 1.

Every ranking orders its listings by their reviews, how complete the profile is and the Trust Score. Diamond Peo has no reviews yet and 3 of the 10 profile details we look for. Where no listing on a page has been reviewed, the order follows the profiles alone.

Business service company · 2 rankings

#9of 7
Wisconsin
It is the only one of the 7 here listing government and insurance.
Its profile: “- Coverage: United States and Canada - Underwriter: United Wisconsin Insurance Company Diamond Peo is a professional employer organisation (PEO) that handles HR, employee benefits, payroll and risk management.”
Of the 7 here, 4 also cover accounting and 2 also cover medical; 2 also work in Milwaukee.
Behind Celerity Accounting, ahead of Diversified Management Services.
#37of 111
Insurance
It is the only one of the top 78 here listing risk management and one of 10 here listing partners.
Its profile: “- Coverage: United States and Canada - Underwriter: United Wisconsin Insurance Company Diamond Peo is a professional employer organisation (PEO) that handles HR, employee benefits, payroll and risk management.”
Of the top 78 here, 26 also cover legal and 24 also cover tax; 6 also work in United States and 4 also work in Texas.
Behind Debt Recoveries Australia, ahead of Digital & Audio Transcription Services.