How do I create measurable indicators for a goal like this?
There is no shortage of questions like this. This is especially common in the people operations department, or to use a term from the 2000s, the human resources department. Why don’t you just smile and make it up as you went along? Suddenly you’re all dressed up. I’m not a child.
Oh, you know the relationship between goals and key results (KRs)? It’s a simple model where there is an emotional abstract expression called a goal, and about three measurable KRs tied to it that can be said to have met the goal.

HR Benefits Program
GOAL :
Operate a benefits program that you can be proud of.
KR1:
Increase employee utilization of benefit programs.
0% → 90%
KR2:
Conduct a survey of benefits programs at 100 companies (over 100 employees)
0社 → 100社
KR3:
Compress the benefits budget per team member.
70,000 yen → 50,000 yen
HR training programs
GOAL :
Implement a personal development program for all team members.
KR1:
Get all team members to approve career roadmap
0 members → 200 members
KR2:
Achieve a 9.0 NPS score in a self-help program.
0pt → 9.0pt
KR3:
Increase the completion rate of personal development programs.
0% → 80%
Recruitment by Human Resources Department
GOAL :
Build an effective recruitment scheme and onboarding process.
KR1:
Reduce employment costs.
200,000yen → 100,000yen
KR2:
Achieve 90% satisfaction with the onboarding process
0% → 90%
KR3:
Increase the number of people you interview about their onboarding experiences.
0 → 10