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PERSONNEL EXPENSES AND DEFERRED EMPLOYEE BENEFITS (Tables)
12 Months Ended
Dec. 31, 2022
Employee Benefits [Abstract]  
Disclosure of Employees Total Annual Compensation
As of December 31, 2022, 2021 and 2020, ArcelorMittal had approximately 154,000, 158,000 and 168,000 employees, respectively, and the total annual compensation of ArcelorMittal’s employees in 2022, 2021 and 2020 was as follows:
 Year ended December 31,
Employee Information202220212020
Wages and salaries6,463 6,707 7,681 
Defined benefits cost (see note 8.2)153 117 260 
Other staff expenses1,300 1,166 1,405 
Total7,916 7,990 9,346 
Disclosure of Information About Key Management Personnel
The total annual compensation of ArcelorMittal’s key management personnel, including its Board of Directors, expensed in 2022, 2021 and 2020 was as follows:
 Year ended December 31,
 202220212020
Base salary and directors fees11 10 
Short-term performance-related bonus16 12 
Post-employment benefits
Share-based payments
Disclosure of Net Defined Benefit Liability (Asset)
Total deferred employee benefits including pension or other post-employment benefits, are as follows:
 December 31,
 20222021
Pension plan benefits1,543 2,334 
Other post-employment benefits and other long-term employee benefits ("OPEB")861 1,184 
Termination benefits150 191 
Defined benefit liabilities2,554 3,709 
Provisions for social plans (non-current)52 63 
Total2,606 3,772 
The following tables detail the reconciliation of defined benefit obligation (“DBO”), plan assets, irrecoverable surplus and statements of financial position.
Year ended December 31, 2022
TotalCanadaBrazilEuropeOther
Change in benefit obligation
Benefit obligation at beginning of the period6,739 3,306 398 2,751 284 
Current service cost99 24 — 63 12 
Interest cost on DBO183 95 39 26 23 
Past service cost - Plan amendments— (4)— 
Past service cost - Curtailments(26)— — (26)— 
Plan participants’ contribution— — — 
Actuarial (gain) loss(1,287)(647)— (645)
Demographic assumptions42 — — (1)43 
Financial assumptions(1,452)(678)(31)(699)(44)
Experience adjustment123 31 31 55 
Benefits paid(388)(208)(36)(117)(27)
Foreign currency exchange rate differences and other movements(394)(204)30 (200)(20)
Benefit obligation at end of the period4,932 2,375 431 1,849 277 
Change in plan assets
Fair value of plan assets at beginning of the period4,496 3,163 376 918 39 
Interest income on plan assets130 87 34 
Return on plan assets less than discount rate(705)(473)(9)(213)(10)
Employer contribution65 22 — 43 — 
Plan participants’ contribution— — — 
Benefits paid(296)(206)(36)(52)(2)
Foreign currency exchange rate differences and other movements(225)(193)26 (58)— 
Fair value of plan assets at end of the period3,466 2,400 391 647 28 
Present value of the wholly or partly funded obligation(3,895)(2,364)(431)(1,072)(28)
Fair value of plan assets3,466 2,400 391 647 28 
Net present value of the wholly or partly funded obligation(429)36 (40)(425)— 
Present value of the unfunded obligation(1,037)(11)— (777)(249)
Prepaid due to unrecoverable surpluses(33)(27)(3)(3)— 
Net amount recognized(1,499)(2)(43)(1,205)(249)
Net assets related to funded obligations44 39 — 
Recognized liabilities(1,543)(41)(43)(1,209)(250)
Change in unrecoverable surplus
Unrecoverable surplus at beginning of the period(33)(28)(2)(3)— 
Interest cost on unrecoverable surplus(1)(1)— — — 
Change in unrecoverable surplus in excess of interest(1)— (1)— — 
Exchange rates changes— — — 
Unrecoverable surplus at end of the period(33)(27)(3)(3)— 
Year ended December 31, 2021
TotalCanadaBrazilEuropeOther
Change in benefit obligation
Benefit obligation at beginning of the period7,604 3,590 517 3,173 324 
Current service cost105 29 — 69 
Interest cost on DBO162 89 33 17 23 
Past service cost - Plan amendments31 28 — — 
Plan participants’ contribution— — — 
Settlements(5)(4)(1)— — 
Actuarial (gain) loss(509)(216)(83)(173)(37)
Demographic assumptions— 10 (1)— 
Financial assumptions(364)(207)(103)(13)(41)
Experience adjustment(154)(9)10 (159)
Benefits paid(428)(219)(31)(148)(30)
Foreign currency exchange rate differences and other movements(222)(37)(191)(3)
Benefit obligation at end of the period6,739 3,306 398 2,751 284 
Change in plan assets
Fair value of plan assets at beginning of the period4,654 3,167 435 1,007 45 
Interest income on plan assets108 76 26 
Return on plan assets greater (less) than discount rate41 103 (25)(33)(4)
Employer contribution72 29 — 43 — 
Plan participants’ contribution— — — 
Settlements(5)(4)(1)— — 
Benefits paid(313)(218)(31)(61)(3)
Foreign currency exchange rate differences and other movements(62)10 (28)(44)— 
Fair value of plan assets at end of the period4,496 3,163 376 918 39 
Present value of the wholly or partly funded obligation(5,222)(3,291)(398)(1,501)(32)
Fair value of plan assets4,496 3,163 376 918 39 
Net present value of the wholly or partly funded obligation(726)(128)(22)(583)
Present value of the unfunded obligation(1,517)(15)— (1,250)(252)
Prepaid due to unrecoverable surpluses(33)(28)(2)(3)— 
Net amount recognized(2,276)(171)(24)(1,836)(245)
Net assets related to funded obligations58 47 — 
Recognized liabilities(2,334)(218)(24)(1,840)(252)
Change in unrecoverable surplus
Unrecoverable surplus at beginning of the period(27)(23)(1)(3)— 
Interest cost on unrecoverable surplus(1)(1)— — — 
Change in unrecoverable surplus in excess of interest(5)(4)(1)— — 
Unrecoverable surplus at end of the period(33)(28)(2)(3)— 
Summary of changes in the other post-employment benefit obligation and changes in plan assets are as follows:
Year ended December 31, 2022
TotalCanadaEuropeOthers
Change in benefit obligation
Benefit obligation at beginning of the period1,190 661 423 106 
Current service cost37 11 21 
Interest cost on DBO30 19 
Actuarial (gain) loss(250)(163)(71)(16)
Demographic assumptions— — 
Financial assumptions(251)(155)(84)(12)
Experience adjustment— (8)13 (5)
Benefits paid(71)(32)(32)(7)
Foreign currency exchange rate differences and other movements(70)(41)(32)
Benefit obligation at end of the period866 455 314 97 
Change in plan assets
Fair value of plan assets at beginning of the period— — 
Return on plan assets less than discount rate(1)— (1)— 
Fair value of plan assets at end of the period— — 
Present value of the wholly or partly funded obligation(20)— (20)— 
Fair value of plan assets— — 
Net present value of the wholly or partly funded obligation(15)— (15)— 
Present value of the unfunded obligation(846)(455)(294)(97)
Net amount recognized(861)(455)(309)(97)
Year ended December 31, 2021
TotalCanadaEuropeOthers
Change in benefit obligation
Benefit obligation at beginning of the period1,438 742 590 106 
Current service cost(1)
Interest cost on DBO25 18 
Past service cost - Plan amendments(57)(58)— 
Past service cost - Curtailments(7)— (7)— 
Actuarial (gain) loss(111)(66)(43)(2)
Demographic assumptions(1)(2)— 
Financial assumptions(66)(55)(5)(6)
Experience adjustment(44)(9)(39)
Benefits paid(82)(34)(44)(4)
Foreign currency exchange rate differences and other movements(25)(24)(2)
Benefit obligation at end of the period1,190 661 423 106 
Change in plan assets
Fair value of plan assets at beginning of the period— — 
Return on plan assets greater/(less) than discount rate— — 
Benefits paid(1)— (1)— 
Fair value of plan assets at end of the period— — 
Present value of the wholly or partly funded obligation(29)— (29)— 
Fair value of plan assets— — 
Net present value of the wholly or partly funded obligation(23)— (23)— 
Present value of the unfunded obligation(1,161)(661)(394)(106)
Net amount recognized(1,184)(661)(417)(106)
Components of Net Periodic Pension and Post-employment Cost
The following tables detail the components of net periodic pension cost:
 Year ended December 31, 2022
Net periodic pension cost (income)TotalCanadaBrazilEuropeOthers
Current service cost99 24 — 63 12 
Past service cost - Plan amendments— (4)— 
Past service cost - Curtailments(26)— — (26)— 
Net interest cost (income) on net DB liability (asset)52 18 22 
Total130 40 51 34 
 Year ended December 31, 2021
Net periodic pension cost (income)TotalCanadaBrazilEuropeOthers
Current service cost105 29 — 69 
Past service cost - Plan amendments31 28 — — 
Net interest cost/(income) on net DB liability (asset)55 14 12 22 
Total191 71 84 29 
 Year ended December 31, 2020
Net periodic pension cost (income)TotalCanadaBrazilEuropeOthers
Current service cost129 25 — 64 40 
Past service cost - Plan amendments— (1)
Past service cost - Curtailments— — — 
Net interest cost (income) on net DB liability (asset)88 13 21 49 
Total225 41 89 90 
The following tables detail the components of net periodic other post-employment cost:
 Year ended December 31, 2022
Components of net periodic OPEB cost (income)TotalCanadaEuropeOthers
Current service cost37 11 21 
Net interest cost (income) on net DB liability (asset)29 19 
Actuarial gain recognized during the year(20)— (20)— 
Total46 30 11 

 Year ended December 31, 2021
Components of net periodic OPEB cost (income)TotalCanadaEuropeOthers
Current service cost(1)
Past service cost - Plan amendments(57)(58)— 
Past service cost - Curtailments(7)— (7)— 
Net interest cost (income) on net DB liability (asset)25 18 
Actuarial gain recognized during the year(14)(1)(13)— 
Total(44)17 (69)

 Year ended December 31, 2020
Components of net periodic OPEB cost (income)TotalCanadaEuropeOthers
Current service cost85 10 27 48 
Past service cost - Plan amendments(1)(1)— — 
Past service cost - Curtailments— — 
Net interest cost (income) on net DB liability (asset)110 19 84 
Actuarial losses recognized during the year— — 
Total205 28 42 135 
Expenses recognized in the Consolidated Statement of Operations
The following tables detail where the expense is recognized in the consolidated statements of operations:
 Year ended December 31,
 202220212020
Net periodic pension cost130 191 225 
Net periodic OPEB cost46 (44)205 
Total176 147 430 
Cost of sales115 72 189 
Selling, general and administrative expenses— 34 
Financing costs - net61 66 207 
Total176 147 430 
Schedule of Weighted-average Asset Allocations for the Funded Defined Benefit Pension Plans by Asset Category
The weighted-average asset allocations for the funded defined benefit plans by asset category were as follows:
 December 31, 2022
CanadaBrazilEurope
Equity Securities36 %%%
- Asset classes that have a quoted market price in an active market27 %%%
- Asset classes that do not have a quoted market price in an active market%%— 
Fixed Income Securities (including cash)43 %77 %69 %
- Asset classes that have a quoted market price in an active market42 %77 %55 %
- Asset classes that do not have a quoted market price in an active market%— 14 %
Real Estate10 %%— 
- Asset classes that have a quoted market price in an active market— — — 
- Asset classes that do not have a quoted market price in an active market10 %%— 
Other11 %16 %30 %
- Asset classes that have a quoted market price in an active market— 16 %%
- Asset classes that do not have a quoted market price in an active market 11 %— 23 %
'1
Total100 %100 %100 %
 December 31, 2021
CanadaBrazilEurope
Equity Securities35 %%%
- Asset classes that have a quoted market price in an active market27 %%%
- Asset classes that do not have a quoted market price in an active market%%— 
Fixed Income Securities (including cash)53 %87 %69 %
- Asset classes that have a quoted market price in an active market49 %87 %69 %
- Asset classes that do not have a quoted market price in an active market%— — 
Real Estate%%— 
- Asset classes that have a quoted market price in an active market— — — 
- Asset classes that do not have a quoted market price in an active market%%— 
Other%%30 %
- Asset classes that have a quoted market price in an active market— %%
- Asset classes that do not have a quoted market price in an active market %— 22 %
'1
Total100 %100 %100 %
1.The percentage consists primarily of assets from insurance contracts in Belgium.
Disclosure of Fair Value of Plan Assets
December 31, 2022
 CanadaBrazilEurope
Equity Securities33 %%%
Fixed Income Securities (including cash)48 %77 %67 %
Real Estate%%— 
Other11 %16 %31 %
'1
Total100 %100 %100 %
1.The percentage consists primarily of assets from insurance contracts in Belgium.
Actuarial Assumptions for Defined Benefit Obligations
Assumptions used to determine benefit obligations at December 31,
 Pension Plans  Other Post-employment Benefits  
 202220212020202220212020
Discount rate      
Range
3.75% - 24.00%
1.00% - 11.00%
0.50% - 10.00%
3.50% - 9.30%
1.00% - 7.95%
0.50% - 6.20%
Weighted average
5.44%
2.75%
2.13%
5.10%
2.65%
1.84%
Rate of compensation increase   
Range
2.00% - 15.00%
2.00% - 10.00%
1.72% - 10.00%
2.00% - 4.80%
2.00% - 4.80%
1.30% - 4.80%
Weighted average
3.01%
2.87%
2.71%
3.29%
3.14%
2.85%
Disclosure of Defined Benefit Plans
 Other Post-employment Benefits
 202220212020
Healthcare cost trend rate assumed   
Range
2.00% - 4.50%
1.30% - 4.50%
1.40% - 4.50%
Weighted average
3.97%
3.95%
3.94%
Disclosure of Sensitivity Analysis for Actuarial Assumptions
The following information illustrates the sensitivity to a change of the significant actuarial assumptions related to ArcelorMittal’s pension plans (as of December 31, 2022, the defined benefit obligation for pension plans was 4,932):
Effect on 2023 Pre-Tax Pension Expense (sum of service cost and interest cost)Effect on December 31, 2022 DBO
Change in assumption  
100 basis points decrease in discount rate
(14)519 
100 basis points increase in discount rate
12 (425)
100 basis points decrease in rate of compensation
(12)(130)
100 basis points increase in rate of compensation
13 132 
1 year increase of the expected life of the beneficiaries
121 
The following table illustrates the sensitivity to a change of the significant actuarial assumptions related to ArcelorMittal’s OPEB plans (as of December 31, 2022 the defined benefit obligation for post-employment benefit plans was 866):
Effect on 2023 Pre-Tax OPEB Expense (sum of service cost and interest cost)Effect on December 31, 2022 DBO
Change in assumption  
100 basis points decrease in discount rate
(1)95 
100 basis points increase in discount rate
(77)
100 basis points decrease in healthcare cost trend rate
(4)(52)
100 basis points increase in healthcare cost trend rate
64 
1 year increase of the expected life of the beneficiaries
— 17 
Terms and Conditions of Share-based Payment Arrangements
Conditions of the 2022 grant were as follows:
Executive OfficeExecutive Officers
2022 Grantl
PSUs with a three year performance period
l
PSUs with a three year performance period
l
Value at grant 120% of base salary for the Executive Chairman and the CEO
lVesting conditions:lVesting conditions
ThresholdTargetTargetStretch
TSR vs. peer group (50%) / EPS vs. peer group (20%)

100% vs. weighted average
≥120% vs. weighted average
TSR vs. peer group (40%)
100% weighted average
≥120% weighted average
Vesting percentage
100%
150%
Vesting percentage
100%
150%
Gap to competition (40%)
100% of target
120% of target
ESG (30%): H&S 10%, Climate action 10% and D&I 10%
100% of target
120% of target
Vesting percentage
100%
150%
ESG (20%): H&S 10%, Climate action 5% and D&I 5%
100% of target
120% of target
Vesting percentage
100%
150%
Vesting percentage
100%
150%
l
RSUs with a three year vesting period
he summary of outstanding plans as of December 31, 2022 is as follows:
Executive OfficeExecutive Officers
2019 Grantl
PSUs with a three year performance period
l
PSUs with a three year performance period
l
Value at grant 100% of base salary for the Executive Chairman and the CEO
lVesting conditions:lVesting conditions:
ThresholdTarget
TSR/EPS vs. peer group
100% median
≥120% median
ROCE
100% target
100% vesting
TSR vs. S&P 500Performance equal to Index
≥Performance equal to Index + 2% p.a. outperformance
Gap to competition (where applicable)
100% target
100% vesting
Vesting percentage
50%
100%
Executive OfficeExecutive Officers
2020 Grantl
PSUs with a three year performance period
l
PSUs with a three year performance period
l
Value at grant 100% of base salary for the Executive Chairman and the CEO
lVesting conditions:lVesting conditions:
ThresholdTargetThresholdTarget
TSR/EPS vs. peer group
100% median
≥120% median
TSR/EPS vs. peer group
100% median
≥120% median
Vesting percentage50%100%
TSR vs. S&P 500Performance equal to Index
≥Performance equal to Index + 2% p.a. outperformance
Gap to competition (where applicable)
100% target
100% vesting
Vesting percentage
50%
100%
Vesting percentage
0%
100%
l
RSUs with a three year vesting period
l
RSUs with a one year vesting period
Executive OfficeExecutive Officers
2021 Grantl
PSUs with a three year performance period
l
PSUs with a three year performance period
l
Value at grant 100% of base salary for the Executive Chairman and the CEO
lVesting conditions:lVesting conditions
ThresholdTargetTargetStretch
TSR vs. peer group (50%) / EPS vs. peer group (20%)

100% median
≥120% median
TSR vs. peer group (40%)
100% weighted average
≥120% weighted average
Vesting percentage
50%
100%
Vesting percentage
100%
150%
Gap to competition (40%)
100% of target
120% of target
ESG (30%)
100% of target
Vesting percentage
100%
150%
ESG (20%)
100% of target
120% of target
Vesting percentage
100%
100%
150%
l
RSUs with a three year vesting period
l
RSUs with a two year vesting period
Summary of Share Unit Plans Outstanding
The following table summarizes the Company’s share unit plans outstanding as of December 31, 2022:
At Grant dateNumber of shares issued as of December 31, 2022
Grant dateType of planNumber of sharesNumber of beneficiariesMaturityFair value
per share
Shares outstandingShares forfeitedShares vested
December 13, 2022RSU866,000 802 December 13, 202527.61 866,000 — — 
December 13, 2022PSU644,800 242 January 1, 202623.64 644,800 — — 
December 13, 2022Executive Office141,564 January 1, 202622.47 141,564 — — 
December 16, 2021RSU729,250 658 December 16, 202432.66 700,650 27,347 1,253 
December 16, 2021PSU575,400 244 January 1, 202528.29 559,800 15,600 — 
December 16, 2021Executive Office109,143 January 1, 202527.20 109,143 — — 
May 7, 2021RSU350,000 189 May 7, 202332.55 309,000 33,282 7,718 
December 14, 2020RSU1,074,600 656 December 14, 202321.15 961,500 99,699 13,401 
December 14, 2020PSU714,250 235 January 1, 202419.74 635,850 78,400 — 
December 14, 2020Executive Office148,422 January 1, 202418.19 148,422 — — 
December 16, 2019PSU1,760,350 517 January 1, 202318.57 1,281,400 303,200 175,750 
December 16, 2019Executive Office172,517 January 1, 202314.89 172,517 — — 
Total7,286,296 
$14.89 – $32.66
6,530,646 557,528 198,122 
Schedule of Share Unit Plan Activity
Share unit plan activity is summarized below as of and for each year ended December 31, 2022, 2021 and 2020:
RSUsPSUs and Executive Office
Number of sharesFair value per shareNumber of sharesFair value per share
Outstanding, December 31, 2019— — 7,472,056 16.76 
Granted 1,391,284 21.15 862,672 19.47 
Exited— — (658,141)16.86 
Forfeited— — (526,420)15.48 
Outstanding, December 31, 20201,391,284 21.15 7,150,167 17.18 
Granted1,079,250 32.62 684,543 28.12 
Exited(315,699)21.20 (613,385)14.04 
Forfeited(59,885)23.47 (2,915,514)15.37 
Outstanding, December 31, 20212,094,950 26.99 4,305,811 20.58 
Granted866,000 27.61 786,364 23.43 
Exited(17,294)26.21 (673,661)20.84 
Forfeited(106,506)26.36 (725,018)19.54 
Outstanding, December 31, 20222,837,150 27.20 3,693,496 21.35