Which is a type of Occupational pension?

Defined Benefit type and Defined contribution type is a type of Occupational pension.
A defined benefit pension plan is a type of pension plan in which an employer/sponsor promises a specified pension payment, lump-sum (or combination thereof) on retirement that is predetermined by a formula based on the employee's earnings history, tenure of service and age, rather than depending directly on individual investment returns.
Defined contribution (DC) schemes are occupational pension schemes where your own contributions and your employer's contributions are both invested and the proceeds used to buy a pension and/or other benefits at retirement.