Employee Retirement Plans

3 Months Ended

Mar. 31, 2020

Retirement Benefits [Abstract]

Employee Retirement Plans

Employee Retirement Plans

Total employee retirement plan expense, which includes related administrative expenses, is as follows:

	Three Months Ended March 31,
	2020		2019
	(in millions)
Defined contribution plans	$	2.6	$	2.2
Multiemployer plan	0.4		0.5
	$	3.0	$	2.7

The Company contributes to a multiemployer defined benefit plan under the terms of a collective-bargaining agreement that covers certain union-represented employees at one of the facilities of Meyer Utility Structures, a subsidiary of Arcosa. The Company contributed $0.4 million and $0.5 million to the multiemployer plan for the three months ended March 31, 2020 and 2019, respectively. Total contributions to the multiemployer plan for 2020 are expected to be approximately $1.7 million.

In connection with the acquisition of ACG in December 2018, the Company assumed the assets and liabilities related to a defined benefit pension plan. Employer contributions for 2020 are not expected to be significant.