30th March 2026

How IR35, Umbrella Regs and Employment Rights Bill Will Reshape Contract Hiring

Three major pieces of legislation are converging on the UK contractor market right now. IR35 is maturing, umbrella company regulation arrives in April 2026, and the Employment Rights Act 2025 introduces the biggest overhaul of workers rights in a generation. Here is what you need to know.

IR35: Time to Move Beyond Blanket Assessments

When off-payroll rules hit the private sector in 2021, many organisations played it safe with blanket inside-IR35 determinations. Five years on, that approach has real costs: talent disadvantage in competitive markets and determinations that do not reflect actual working practices are difficult to defend under scrutiny.

The opportunity now is to build proper, role-by-role assessments. Organisations that can credibly offer outside-IR35 engagements where roles genuinely qualify are gaining a competitive edge in candidate-short sectors like engineering, defence and advanced manufacturing.

Blanket inside-IR35 approaches driven by cost avoidance are increasingly hard to defend and increasingly costly in terms of the talent they drive away.

Review whether current assessments reflect genuine working practices.
Identify roles that may legitimately sit outside IR35.
Document everything – HMRC investigations hit hardest where records are poor.

Umbrella Regulation: A Line-of-Sight Compliance Risk from April 2026

From 6 April 2026, a new joint and several liability regime means that if an umbrella company in your supply chain fails to correctly remit PAYE and National Insurance, HMRC can pursue your agency or your organisation directly for the full unpaid amount. There is no statutory defence even where due diligence has been conducted.

HMRC has already flagged suspected non-compliant umbrella operations. For organisations with large contractor workforces on high day rates, the exposure can run to hundreds of thousands of pounds.

Watch out for these red flags in your supply chain:

Mini-umbrella structures exploiting VAT and Employment Allowance thresholds
Disguised remuneration – pay partly delivered through loans or other non-PAYE structures
Opaque payslips that do not clearly separate salary, holiday pay and expenses
Umbrella providers offering rates significantly below market norms

What to do now:

Map your supply chain. Identify every umbrella company currently paying your contractors.
Strengthen agency contracts with compliance warranties, tax indemnities and audit rights.
Implement ongoing governance, not one-off due diligence.
Ensure HR, finance, procurement and hiring managers all understand the new liability regime.

Book a supply chain audit today.

Employment Rights Act 2025: Three Changes Contract Hirers Cannot Ignore

1.The Fair Work Agency Launches in April 2026

A new enforcement body with wide-ranging powers, including entering premises, demanding information and imposing penalties, will have direct enforcement rights over holiday pay, minimum wage and statutory sick pay. If your contingent workforce holiday pay arrangements sit in a grey area, now is the time to fix them.

2. Fire and Replace is Now Automatically Unfair (October 2026)

Dismissing employees and replacing them with contractors doing substantially the same role will be automatically unfair dismissal from October 2026. Any restructuring involving a shift from employed to contract workers needs careful legal assessment before it goes ahead.

3. Day-One Rights and a Shorter Qualifying Period (from 2026/27)

From April 2026, workers gain day-one rights to paternity leave, parental leave and bereavement leave. From January 2027, the unfair dismissal qualifying period drops from two years to six months, meaning anyone hired from late June 2026 is protected far sooner. The cap on compensatory awards is also removed. Together, these changes materially raise the cost of permanent hiring decisions that go wrong.