Under ERISA, plan fiduciaries must ensure the total amount of compensation paid to a service provider is reasonable. Find general information about 401(k) plans, the tax advantages of sponsoring the plan and the types of plans available.There are two main types of profitsharing plans: cash and deferred. With a cash plan, the employer provides regular profit-sharing payments. There are two main types of profitsharing plans: cash and deferred. The 5th anniversary of the time a plan participant commenced participation in the plan. The Internal Revenue Code and ERISA dictate who can be excluded from plan participation. Defined benefit plans that end in a standard termination.