Yes. When funds become available for withdrawal primarily depends on the type of deposit. While all credit unions are subject to the same maximum hold periods established by law, each credit union may make deposits available sooner.
A credit union can make the deposit available immediately or delay availability up to the maximum prescribed by law.
If your payroll check is a direct deposit, then credit unions must make funds available for withdrawal on the settlement/effective date. This is the date on which funds are actually payable—not the date received by the credit union.