The three things
Organization
A tenant. One company’s data — its people, punches, rosters, payroll and filings. Organizations never see each other’s data.
User
The person. One login, one email address, one password, globally unique.
Employee
A person’s membership in one organization. Their code, role, manager, department, location and compensation there.
What lives where
The practical consequence: your email is yours everywhere; everything else is per organization. Two organizations can both have an employee code
EMP-0421, and they are different people. The same person can hold a different role in each organization they belong to.
One login, several organizations
Because the password belongs to the person and not the membership, someone who works for two organizations on OnTime signs in once. An organization switcher changes which membership the session is acting as. Switching is a deliberate action, not a re-login: your session stays alive and simply changes which organization it is pointed at. Every screen, every query and every export then reflects that organization only.A user who belongs to exactly one organization — most people — never sees any of this. They sign in and they are in.