Fall detection wearables are nothing new. Considering that many people are wearing smartwatches these days, it might make sense to use these devices to detect falls. The Fall Safety App for Apple Watch does just that. It alerts people important to you in case of a fall at a job site. The app sends your location to your emergency contacts as well.
The app sounds a warning alarm when it detects a fall, giving you 45 seconds to turn it off. It offers HealthKit integration. You can try the app for under $5.