For corporate workplaces
Your workforce is your biggest cost. Light is your cheapest lever.
Earthlight models the Human ROI of circadian lighting for the workplace — turning sharper focus, fewer sick days, and stronger retention into the financial language your CFO already uses.
01 — The problem
Flat light, flat afternoons
Payroll is the largest line on the operating budget, and most offices run it under dim, unchanging light that flattens alertness by mid-afternoon. People feel the 2 p.m. slump, sleep worse, and bring less of themselves to the desk — a quiet tax on performance that never shows up next to the lighting spend.
Employees
lose focus, energy, and sleep.
Managers
absorb the slumps, sick days, and churn.
The business
pays for it in performance and turnover.
02 — The Human ROI
Where the Human ROI shows up
Earthlight quantifies the levers that move a workforce P&L — so the case for good light is made in numbers, not adjectives.
Cognitive performance
Brighter, well-timed daytime light supports the alertness and focus that fade through the afternoon, when output usually sags.
Fewer sick days
Better sleep and circadian alignment support immune function and cut into absenteeism.
Less presenteeism
People who sleep and feel better do more than show up — they actually perform.
Talent retention & attraction
A workplace that visibly invests in well-being is one people choose, and stay in.
Return-to-office pull
When the office feels measurably better than home, attendance follows without a mandate.
Building value
Circadian design strengthens WELL and LEED positioning — and the leasing premium that follows.
03 — The science
Daylight is the signal the body is built around
Human alertness, mood, and sleep are tuned by the light we get during the day. Bright, blue-rich morning and midday light sharpens daytime performance and protects nighttime sleep; flat indoor light does neither.
Earthlight grounds its models in this circadian science and the standards advancing it, then translates it into the operational and financial terms your decisions run on.
04 — How it works
From light to line item
01
Walk the floors
We map how light moves through workstations, meeting rooms, and common areas across the day — where it supports performance and where it drains it.
02
Model the Human ROI
We translate circadian impact into the terms finance uses: focus, absenteeism, retention, and building value.
03
Protect the spec
We give your design, facilities, and real estate teams the numbers to defend circadian lighting before it's value-engineered out.
05 — Questions
Before you ask
Is Earthlight a lighting product?
No — Earthlight is decision-support software. We model and quantify the human ROI of circadian lighting so the right design survives budgeting. We work alongside your designers and vendors, not in place of them.
New fit-out or existing space?
Either. Modeling the ROI before value engineering protects the design — and retrofits often surface the quickest paybacks.
Does the evidence actually hold up?
We build on established circadian science and recognized standards like the IES, the WELL Building Standard, and LEED. The Review shows you the assumptions behind every number.
Who is this for?
Workplace and facilities leaders, corporate real estate teams, designers, and the CFOs who sign off on the build.
See the Human ROI for your workplace.
A 20-minute review that turns circadian light into the focus, attendance, and retention numbers your CFO uses to decide.