Final answer:
Employers contribute money on behalf of their employees to the local pension trust fund through pension plans or retirement accounts.
Step-by-step explanation:
Employers contribute money on behalf of their employees to the local pension trust fund. This is typically done through pension plans or retirement accounts that the employer sets up for their workers. In traditional pension plans, the employer contributes a fixed amount to the worker's retirement account on a regular basis, along with the employee's contributions. These funds are then invested to generate returns and provide retirement benefits.