A Resource for County of San Mateo Employees, Supervisors, and Managers
L. I worked for the County for five years, then left to take another job for a couple years. I’ve been back for three years. How much seniority do I have?
Employee Relations Handbook, Layoff, Seniority
You will need to talk to Human Resources for an exact determination, as most breaks in County service result in a restart of calculating seniority.