Company: KELYB
Filing Date: 2025-04-14
Form Type: DEF 14A
Source: 0001193125-25-080159
Chunk: 0

Company: KELLY SERVICES INC
Filing Date: 2025-04-14
Form: DEF 14A
Chunk 0
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a party other than the Registrant ☐ Check the appropriate box:

| ☐ |     | Preliminary Proxy Statement                                                    |
| ☐ |     | Confidential, for Use of the Commission Only (as permitted by Rule14a-6(e)(2)) |
| ☒ |     | Definitive Proxy Statement                                                     |
| ☐ |     | Definitive Additional Materials                                                |
| ☐ |     | §240.14a-12                                                                    |

Kelly Services Inc. (Name of Registrant as Specified In Its Charter) (Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box):

| ☒ |     | No fee required.                                |
| ☐ |     | Fee paid previously with preliminary materials. |
| ☐ |     | 14a-6(i)(1)                                     
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#### VisionTo be the top workforcesolutions provider that driveslimitless opportunitiesand growth by connectingorganizations with specialtytalent.
| Letter to Shareholders |

April 14, 2025 Dear Shareholders: 2024 marked a period of significant strategic progress for Kelly as we accelerated forward on our specialty growth journey. We entered the year a more efficient and focused enterprise expecting to deliver above-market results on a consistent basis. Our priorities were clear: capture a greater share of customer demand, and more effectively convert top-linegrowth to bottom-line profitability. Through disciplined execution and dedication to meeting the evolving needs of our clients and talent, we delivered on these commitments and are poised to drive further progress in 2025. Capturing Market Share and Driving Organic Growth Kelly achieved positive organic revenue growth in 2024 that outperformed the market, driven by strategic contributions from each of our business units and our organic growth initiatives. Kelly Education once again delivered double-digit revenue growth through continued strong fill rates and net-newcustomer wins in its market-leading K-12specialty. Kelly Science, Engineering & Technology (SET) maintained its focus on expanding into the market for higher-margin outcome-based offerings through its innovative statementWorx suite of solutions. Kelly Professional & Industrial (P&I) continued to capture industrial and commercial staffing market