| In millions, except per share items | Dec-30-22 | Dec-31-21 | Jan-01-21 | Jan-03-20 | Dec-28-18 | Dec-29-17 | Dec-30-16 | Jan-01-16 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Revenues: |
| Engineering and other scientific | | | | 339.8 | 306.3 | 277.6 | 248.3 | 238.0 |
| Environmental and health | | | | 77.4 | 73.3 | 70.2 | 66.8 | 74.9 |
| Total revenues [+] | 513.3 | 466.3 | 399.9 | 417.2 | 379.5 | 347.8 | 315.1 | 312.8 |
| Services | | | | | | | | 295.7 |
| Reimbursements | | | | | | | | 17.1 |
| Revenue growth [+] | 10.1% | 16.6% | -4.1% | 9.9% | 9.1% | 10.4% | 0.7% | 2.7% |
| Engineering and other scientific | | | | 10.9% | 10.3% | 11.8% | 4.3% | 6.5% |
| Environmental and health | | | | 5.7% | 4.4% | 5.1% | -10.8% | -7.9% |
| Cost of goods sold [+] | 264.2 | 278.0 | 250.0 | 311.6 | 270.5 | 258.0 | 237.7 | 228.6 |
| Labor costs | | | | 252.2 | 215.1 | 210.3 | 193.4 | 184.5 |
| Reimbursable costs | | | | 25.8 | 24.9 | 18.1 | 15.9 | 17.1 |
| Other direct costs | | | | 33.6 | 30.6 | 29.5 | 28.4 | 27.0 |
| Gross profit | 249.1 | 188.2 | 149.9 | 105.6 | 109.0 | 89.8 | 77.4 | 84.2 |
| Gross margin | 48.5% | 40.4% | 37.5% | 25.3% | 28.7% | 25.8% | 24.6% | 26.9% |
| Selling, general and administrative [+] | 372.5 | 357.3 | 316.7 | 20.5 | 17.5 | 17.8 | 28.8 | 28.3 |
| Sales and marketing | | | | | | | 12.8 | 12.5 |
| General and administrative | | | | 20.5 | 17.5 | 17.8 | 16.0 | 15.8 |
| Other selling, general and administrative | | | | | | | 12.8 | 12.5 |
| Other operating expenses | | | | | | | -13.3 | -13.0 |
| EBITDA [+] | -116.3 | -162.6 | -159.9 | 91.9 | 97.7 | 78.3 | 68.0 | 74.4 |
| EBITDA growth | -28.5% | 1.7% | -274.0% | -6.0% | 24.8% | 15.1% | -8.6% | 7.9% |
| EBITDA margin | -22.7% | -34.9% | -40.0% | 22.0% | 25.8% | 22.5% | 21.6% | 23.8% |
| Depreciation and amortization | 7.1 | 6.5 | 6.9 | 6.8 | 6.3 | 6.3 | 6.1 | 5.5 |
| EBIT [+] | -123.4 | -169.1 | -166.8 | 85.1 | 91.5 | 72.1 | 61.9 | 68.9 |
| EBIT growth | -27.0% | 1.4% | -296.0% | -6.9% | 26.9% | 16.4% | -10.2% | 8.5% |
| EBIT margin | -24.0% | -36.3% | -41.7% | 20.4% | 24.1% | 20.7% | 19.6% | 22.0% |
| Interest income | 2.1 | 0.1 | 1.7 | 3.9 | 2.8 | 1.3 | 0.7 | 0.2 |
| Interest income | 2.1 | 0.1 | 1.7 | 3.9 | 2.8 | 1.3 | 0.7 | 0.2 |
| Other income (expense), net [+] | 253.5 | 294.9 | 262.0 | 15.2 | -0.9 | 9.2 | 6.5 | 2.0 |
| Other non-operating income | | | | | | | 6.5 | 2.0 |
| Other | | | | 15.2 | -0.9 | 9.2 | 6.5 | 2.0 |
| Pre-tax income | 132.2 | 125.8 | 96.9 | 104.2 | 93.3 | 82.5 | 69.1 | 71.1 |
| Income taxes | 29.9 | 24.6 | 14.4 | 21.7 | 21.1 | 41.2 | 21.6 | 27.5 |
| Tax rate | 22.6% | 19.6% | 14.8% | 20.9% | 22.6% | 49.9% | 31.3% | 38.7% |
| Net income | 102.3 | 101.2 | 82.6 | 82.5 | 72.3 | 41.3 | 47.5 | 43.6 |
| Net margin | 19.9% | 21.7% | 20.6% | 19.8% | 19.0% | 11.9% | 15.1% | 13.9% |
| |
| Basic EPS [+] | $1.98 | $1.92 | $1.58 | $1.56 | $1.37 | $0.78 | $0.90 | $1.64 |
| Growth | 2.8% | 22.1% | 0.7% | 14.6% | 74.3% | -12.6% | -45.3% | 8.3% |
| Diluted EPS [+] | $1.96 | $1.90 | $1.55 | $1.53 | $1.33 | $0.77 | $0.87 | $1.60 |
| Growth | 3.1% | 22.6% | 1.2% | 14.7% | 74.3% | -12.4% | -45.3% | 8.6% |
| |
| Dividends per share [+] | $0.96 | $0.80 | $0.76 | $0.64 | $0.52 | $0.42 | $0.36 | $0.60 |
| Growth | 20.0% | 5.3% | 18.8% | 23.1% | 23.8% | 16.7% | -40.0% | 20.0% |
| |
| Shares outstanding (basic) [+] | 51.7 | 52.6 | 52.4 | 52.7 | 52.9 | 52.7 | 53.0 | 26.6 |
| Growth | -1.7% | 0.4% | -0.6% | -0.4% | 0.3% | -0.5% | 99.1% | -1.1% |
| Shares outstanding (diluted) [+] | 52.3 | 53.3 | 53.3 | 53.9 | 54.2 | 54.0 | 54.3 | 27.3 |
| Growth | -2.0% | 0.0% | -1.0% | -0.5% | 0.4% | -0.7% | 99.0% | -1.3% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |