Hybrid 3/2 vs 4/1: What Construction & Engineering Employers Are Actually Doing in 2025

Across Ireland’s construction and engineering sectors, hybrid working has moved from a post-pandemic experiment to a core part of how employers attract and retain staff. For many of the companies we work with, the discussion is no longer whether hybrid work is possible but how many days make sense on-site versus remote.

At Sonas Technical, we see two main models dominating our placements and employer conversations in 2025: the 3/2 split (three days on-site, two remote) and the 4/1 split (four days on-site, one remote). Both have become standard talking points in interviews, salary reviews and retention strategies.

The New Norm in 2025

Our 2025 Salary & Benefits Report confirms that Flexible Work Arrangements are now one of the most offered and most valued benefits across construction and engineering roles. Employers recognise that flexibility is a key differentiator, particularly as skilled professionals continue to have strong bargaining power in a tight labour market.

We’re seeing that most companies in the industry now offer some form of hybrid working, but the exact balance depends on role type and project stage.

• Design, project management and commercial roles (such as QSs and planning engineers) often operate on a 3/2 pattern. These positions require collaboration but can comfortably manage remote documentation, tendering and reporting tasks.
• Site-based roles (site engineers, foremen, supervisors) more often fall into a 4/1 arrangement, primarily on-site with one remote day used for admin, reporting or training.
• A small proportion of employers still insist on full on-site attendance, but we are seeing these businesses struggle to attract top candidates compared with those offering even limited flexibility.

Why the 3/2 Model Leads the Market

The 3/2 hybrid model has emerged as the preferred balance for most of our construction and engineering clients. It gives teams strong on-site collaboration while still offering meaningful work-life balance and cost savings for employees.

Many employers report tangible benefits:

• Higher staff retention, particularly among mid-career professionals balancing family commitments.
• Increased productivity during remote days for planning, design reviews or documentation.
• Improved perception of company culture, as flexibility signals trust and modernity to candidates.

Where projects or client demands require greater on-site coordination, the pattern often flexes temporarily to 4/1 during delivery stages, before returning to 3/2 post-handover. This pragmatic approach has become the hallmark of the most adaptive employers we partner with.

The 4/1 Model as a Realistic Minimum Flexibility

The 4/1 model is increasingly viewed as the baseline offer, especially for site-driven organisations. It maintains the essential face-to-face collaboration construction depends on while giving employees one remote day to complete paperwork or simply rebalance their week.

From our conversations with candidates, even one remote day can make a significant difference to satisfaction and retention. However, employers relying on a 4/1 structure should be aware that flexibility expectations continue to rise, particularly among younger engineers and QSs.

In short: 4/1 keeps you competitive, but 3/2 makes you desirable.

What Employers Are Doing in Practice

Our consultants across Ireland are seeing consistent patterns across regions and disciplines:

• Leinster and Dublin: Most design consultancies and client-side engineering firms now run 3/2 as standard. Candidates frequently expect at least two remote days per week.
• Munster and Connacht: A mix of 3/2 and 4/1 depending on site intensity, with some regional contractors using flexible Friday or Monday remote options to support travel-heavy staff.
• Contractors and Developers: Generally 4/1 or on-site-only for site crews, but hybrid for commercial and planning teams.
• Public and Semi-State Employers: Many have formalised 3/2 policies in line with government flexible work guidance, setting a benchmark for private-sector competition.

What This Means for Employers Competing for Talent

The reality in 2025 is clear: hybrid working is now a standard expectation, not a niche perk. The firms that are winning talent across the construction and engineering space are those that:

1. Define their hybrid model clearly. Candidates want certainty on how many days are remote, not vague flexibility.
2. Match flexibility to project needs. Adjusting between 3/2 and 4/1 throughout project cycles shows responsiveness.
3. Invest in digital tools. Cloud collaboration, remote site management systems and secure access to design data make hybrid possible even in traditionally hands-on environments.
4. Promote hybrid working in job adverts. We consistently see higher engagement rates for listings that include a defined hybrid pattern.

Our Outlook

Based on our data and ongoing market interactions, we expect the 3/2 hybrid split to remain the dominant model through 2025 and into 2026. The 4/1 pattern will persist for site-driven organisations but will be viewed increasingly as the minimum standard rather than the default.

Employers still insisting on full-time site presence are now facing measurable recruitment challenges, especially for commercial, design and project management professionals who know that flexibility is available elsewhere.

Hybrid working in construction and engineering is no longer experimental. It is operational reality and one of the key levers shaping who wins and who loses in Ireland’s talent market.