I’m deciding where to put our Q2 training budget and want evidence, not anecdotes. If you’ve done Lean Six Sigma Green Belt, CHIA, or Cornell’s Service Operations (6 weeks), what measurable lift did you see — e.g., labor cost % down, housekeeping minutes/room, ADR or GOPPAR — within 90 days? For context, after a one-day Kaizen in November we cut checkout room turn time from 38 to 34 minutes and reduced OT 9%, and I’m trying to benchmark whether a deeper program yields materially better deltas.
Did Cornell’s Service Ops (6 weeks) for a 210-key select-service; within 90 days minutes/room dropped 32→27 and HK labor % fell 1.0 pt by re-routing departures and kitting carts — payback in about 7 weeks. Small caveat: it only stuck because we baked the new sequence into daily standups; after your “38” Kaizen, @OP, are you using a fixed first-pass pathing map?
, Green Belt was the fastest 90‑day ROI for us: at a 162‑key select‑service we cut HK minutes/room 33→27 and HK labor % by 1.4 pts by killing the second inspection and using a ‘first‑time quality’ closeout checklist; resetting linen pars 3.5→2.8 also trimmed laundry OT about 7%.
Quick example from hotels: I did AHLEI’s Guest Service Gold and the CGSP badge in one evening and a full-service property called me for lobby/front desk the same week — that’s a “quick, impactful credential” for guest services. Small caveat: some brands will train you anyway, so don’t overpay; ask if they reimburse or accept their pre-hire modules. The ID maze is still the slowest part, , but having CGSP on the resume got me past the first screen.