Workshop lighting in 2026 has evolved beyond simple illumination to become a strategic tool that enhances visual acuity, reduces eye strain, and even supports the woodworker’s circadian rhythm for better health and productivity. This technical guide examines the latest research on human-centric lighting and provides a comprehensive framework for designing workshop illumination systems that optimize both precision work and operator wellbeing. We begin by reviewing the photometric parameters critical for woodworking: illuminance (lux), color rendering index (CRI), correlated color temperature (CCT), and uniformity ratio. The guide provides recommended minimum lux levels for various operations: general workshop (500 lux), assembly and finishing (1000 lux), and detailed routing or carving (2000 lux). We then introduce the concept of human-centric lighting (HCL), which adjusts CCT throughout the day to mimic natural daylight, with cool white (5000K) in the morning for alertness, neutral (4000K) mid-day, and warm (3000K) in the afternoon to promote relaxation after work. The guide evaluates LED fixtures available in 2026 with tunable white capability, dimming, and controllability via DALI or wireless protocols. We provide specifications for fixture placement: spacing height ratios, aiming angles to avoid glare on glossy surfaces, and shadow management for overhead and task lighting. A significant portion is dedicated to the benefits of high CRI (≥90) and R9 values (>50) for accurate color perception in finishing and veneer matching. We present a case study of a professional cabinet shop that upgraded to HCL, reporting a 20% reduction in finishing defects and a 15% increase in productivity, attributed to reduced visual fatigue. The guide also covers emergency lighting, flicker mitigation (flicker index <10%), and the integration of daylight harvesting (skylights or windows with automated blinds). We address the psychological effects: cool light enhances focus but can be tiring; warm light promotes creativity but may reduce alertness; the best solution is adaptive. We also discuss the role of task lighting (magnifying lamps with adjustable arms) and the importance of lighting controls (presets for different operations). The guide concludes with an implementation checklist: assess current lighting, measure existing lux levels, consult a lighting designer for complex layouts, and budget for tunable-white fixtures with smart controls. This guide helps woodworkers create a workshop environment that not only improves work quality but also supports their long-term health and satisfaction.