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v3.25.1

Employee Retirement Plans | 3 Months Ended
--- | ---
Mar. 31, 2025
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, |  |
| 2025 |  | 2024 |  |  |  |
| (in millions)
Defined contribution plans | $ | 4.4 |  |  | $ | 4.0 |  |  |  |  |
Multiemployer plans | 0.5 |  |  | 0.4 |  |  |  |  |
| $ | 4.9 |  |  | $ | 4.4 |  |  |  |  |
The Company contributes to various multiemployer defined benefit pension plans under the terms of collective-bargaining agreements that cover certain union-represented employees at one of the facilities in our Engineered Structures segment and four of the facilities in our Construction Products segment acquired in the Stavola acquisition. The Company contributed $0.5 million and $0.4 million to the multiemployer plans for the three months ended March 31, 2025 and 2024, respectively. Total contributions to these plans for 2025 are expected to be approximately $2.9 million.

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