13 Accrued expenses
| In CHF million | 2021 | 2020 | ||
|---|---|---|---|---|
| Personnel expenses | 529 | 521 | ||
| Late cost for customer contracts | 285 | 286 | ||
| Cost of materials and services | 217 | 195 | ||
| Other accrued expenses | 272 | 267 | ||
| Total accrued expenses | 1 303 | 1 269 |
Late cost accruals for customer contracts represent the Group’s expected cost for follow-up work on new installations or modernizations after handover to the customer. Late cost accruals are typically used within one year.