Your MSP business should approach the issue strategically. Figure out which areas of your onboarding process are most apt to benefit from optimization. Four worth considering are:
Ensuring Onboarding Objectives are Clear
Your MSP business needs to have clear objectives pertaining to how you onboard new hires. When should they be independent of orientation? When can they be used to help onboard other employees? What kind of grace period should come? When do they need to start producing ROI for your business? Design objectives with ranges (four to five weeks, 20-30% recoup of ROI within X amount of time, etc.).