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EMPLOYEE RELATED LIABILITIES
 12 Months Ended
Dec. 31, 2021
Postemployment Benefits [Abstract]  
EMPLOYEE RELATED LIABILITIES
NOTE 13:      EMPLOYEE RELATED LIABILITIES
A.Employee Termination Benefits
 
Israeli law, labor agreements and corporate policy determine the obligations of Tower to make severance payments to dismissed Israeli employees and to Israeli employees leaving employment under certain circumstances. Generally, the liability for severance pay benefits, as determined by Israeli law, is based upon length of service and the employee’s monthly salary. This liability is primarily covered by regular deposits made each month by Tower into recognized severance and pension funds and by insurance policies maintained by Tower, based on the employee’s salary for the relevant month. The amounts so funded and the liability are included in the balance sheets in long-term investments and employee related liabilities in the amounts of $8,273 and $10,724, respectively, as of December 31, 2021.
 
Commencing January 1, 2005, Tower implemented a labor agreement with regard to most of its Israeli employees, according to which monthly deposits into recognized severance and pension funds or insurance policies will release it from any additional severance obligation in excess of the balance in such accounts to such Israeli employees and, therefore, Tower incurs no liability or asset with respect to such severance obligations and deposits, since that date. Any net severance amount as of such date will be released on the employee’s termination date. Payments relating to Israeli employee termination benefits were $5,941, $5,254 and $5,597 for 2021, 2020 and 2019, respectively.
 

TPSCo established a Defined Contribution Retirement Plan (the “DC Plan”) for its employees through which TPSCo contributes approximately 8% for 2021 and 9% for 2020 with employees’ average match of 1% of the employees’ base salary to the DC Plan. Such contribution releases the employer from further obligation to make any additional payments upon termination of employment. The contribution is remitted either to third party benefit funds based on employee preference, or directly, to those employees who elected not to enroll in the DC Plan. Total payments under the DC Plan in 2021, 2020 and 2019 amounted to $5,331, $6,132 and $6,572, respectively.

B.TSNB Employee Benefit Plans
The following information provides the changes in 2021, 2020 and 2019 periodic expenses and benefit obligations due to the bargaining agreement signed between TSNB and its collective bargaining unit employees.
Post-Retirement Medical Plan
The components of the net periodic benefit cost and other amounts recognized in other comprehensive income for post-retirement medical plan expense are as follows as of December 31, 2021, 2020 and 2019:

Details

  
2021
    
2020
    
2019
  
Net periodic benefit cost:
                  
Service cost
  
$
5
    
$
6
    
$
7
  
Interest cost
    
52
      
57
      
72
  
Amortization of prior service costs
    
--
      
--
      
--
  
Amortization of net loss (gain)
    
(179
)
    
(241
)
    
(298
)
Total net periodic benefit cost
  
$
(122
)
  
$
(178
)
  
$
(219
)
Other changes in plan assets and benefits obligations recognized in other comprehensive income:
                        
Prior service cost for the period
  
$
--
    
$
--
    
$
--
  
Net loss (gain) for the period
    
(23
 )    
146
 
    
(1
)
Amortization of prior service costs
    
--
      
--
      
--
  
Amortization of net gain (loss)
    
179
      
241
      
298
  
Total recognized in other comprehensive income (loss)
  
$
156
    
$
387
    
$
297
 
Total recognized in net periodic benefit cost and other comprehensive income (loss)
  
$
34
    
$
209
    
$
78
 
Weighted average assumptions used:
                        
Discount rate
    
2.80
 %    
3.40
 %    
4.50
 %
Expected return on plan assets
    
N/A
      
N/A
      
N/A
  
Rate of compensation increases
    
N/A
      
N/A
      
N/A
  
Assumed health care cost trend rates:
                        
Health care cost trend rate assumed for current year (pre-65/post-65 Medicare Advantage)
    
6.00%/6.50
 %    
6.20%/(5.00)
 %    
6.90%/13.10
 %
Health care cost trend rate assumed for current year (pre-65/post-65 Non-Medicare Advantage)
    
6.00%/6.50
 %    
6.20%/6.10
 %    
6.90%/7.90
 %
Ultimate rate (pre-65/post-65)
    
4.50%/4.50
 %    
4.50%/4.50
 %    
4.50%/4.50
 %
Year the ultimate rate is reached (pre-65/post-65)
    
2029/2029
      
2029/2029
      
2029/2029
  
Measurement date
  
December 31, 2021
    
December 31, 2020
    
December 31, 2019
  
The components of the change in benefit obligation, change in plan assets and funded status for post-retirement medical plan are as follows as of years ended December 31, 2021, 2020 and 2019:

Details

  
2021
    
2020
    
2019
  
Change in medical plan related benefit obligation:
                  
Medical plan related benefit obligation at beginning of period
  
$
1,882
    
$
1,689
    
$
1,628
  
Service cost
    
5
      
6
      
7
  
Interest cost
    
52
      
57
      
72
  
Benefits paid
    
(4
)
    
(16
)
    
(17
)
Change in medical plan provisions
    
--
      
--
      
--
  
Actuarial loss (gain)
    
(23
 )    
146
 
    
(1
)
Benefit medical plan related obligation end of period
  
$
1,912
    
$
1,882
    
$
1,689
  
Change in plan assets:
                        
Fair value of plan assets at beginning of period
  
$
--
    
$
--
    
$
--
  
Employer contribution
    
4
      
16
      
16
  
Benefits paid
    
(4
)
    
(16
)
    
(16
)
Fair value of plan assets at end of period
  
$
--
    
$
--
    
$
--
  
Medical plan related net funding
  
$
(1,912
)
  
$
(1,882
)
  
$
(1,689
)

As of December 31, 2021, 2020 and 2019:

Details

  
2021
    
2020
    
2019
  
Amounts recognized in statement of financial position:
                        
Current liabilities
  
$
(48
)
  
$
(62
)
  
$
(50
)
Non-current liabilities
    
(1,864
)
    
(1,820
)
    
(1,639
)
Net amount recognized
  
$
(1,912
)
  
$
(1,882
)
  
$
(1,689
)
Weighted average assumptions used:
                        
Discount rate
    
3.00
 %    
2.80
 %    
3.40
 %
Rate of compensation increases
    
N/A
      
N/A
      
N/A
  
Assumed health care cost trend rates:
                        
Health care cost trend rate assumed for next year (pre-65/post-65 Medicare Advantage)
    
5.80%/8.50
 %    
6.00%/6.50
 %    
6.20%/(5.00)
 %
Health care cost trend rate assumed for next year (pre-65/post-65 Non-Medicare Advantage)
    
5.80%/6.20
 %    
6.00%/6.50
 %    
6.20%/6.10
 %
Ultimate rate (pre-65/post-65 Medicare Advantage)
    
4.40%/4.50
 %    
4.50%/4.50
 %    
4.50%/4.50
 %
Ultimate rate (pre-65/post-65 Non-Medicare Advantage)
    
4.40%/4.40
 %    
4.50%/4.50
 %    
4.50%/4.50
 %
Year the ultimate rate is reached (pre-65/ post-65)
    
2031/2031
      
2029/2029
      
2029/2029
  
The following benefit payments are expected to be paid in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter:
Fiscal Year
  
Other Benefits
  
2022
  
$
48
  
2023
    
55
  
2024
    
65
  
2025
    
71
  
2026
    
74
  
2027-2031
  
$
439
  
Description of Significant Gains and Losses in Obligations:
For fiscal year ended December 31, 2021, the benefit obligation experienced a net actuarial gain that was primarily attributable to the discount rate increase to 3.00%, compared to 2.80% in the prior year. For fiscal year ended December 31, 2020, the benefit obligation experienced a net actuarial loss that was primarily attributable to the discount rate decrease to 2.80%, compared to 3.40% in the prior year.
TSNB Pension Plan
TSNB has a pension plan that provides for monthly pension payments to eligible employees upon retirement. The pension benefits are based on years of service and specified benefit amounts. TSNB uses a December 31 measurement date each year. TSNB’s funding policy is to make contributions that satisfy at least the minimum required contribution for IRS qualified plans.
The components of the change in benefit obligation, the change in plan assets and funded status for TSNB’s pension plan for the years ended December 31, 2021, 2020 and 2019 are as follows:

Details

  
2021
    
2020
    
2019
  
Net periodic benefit cost:
                  
Interest cost
  
$
575
    
$
687
    
$
817
  
Expected return on plan assets
    
(788
)
    
(909
)
    
(930
)
Expected administrative expenses
    
100
      
100
      
100
  
Amortization of prior service costs
    
3
      
3
      
3
  
Amortization of net loss (gain)
    
27
      
27
      
--
  
Total net periodic benefit cost
  
$
(83
)
  
$
(92
)
  
$
(10
)
Other changes in plan assets and benefits obligations recognized in other comprehensive income:
                        
Prior service cost for the period
  
$
--
    
$
--
    
$
--
  
Net loss (gain) for the period
    
(1,038
 )    
149
      
1,158
 
Amortization of prior service costs
    
(3
)
    
(3
)
    
(3
)
Amortization of net gain (loss)
    
(27
 )    
(27
 )    
--
  
Total recognized in other comprehensive income (loss)
  
$
(1,068
 )  
$
119
    
$
1,155
 
Total recognized in net periodic benefit cost and other comprehensive income (loss)
  
$
(1,151
 )  
$
27
    
$
1,145
 
Weighted average assumptions used:
                        
Discount rate
    
2.50
  %    
3.20

%

    
4.40
 %
Expected return on plan assets
    
3.10

%

    
3.80

%

    
4.20
 %
Rate of compensation increases
    
N/A
      
N/A
      
N/A
  
The components of the change in benefit obligation, change in plan assets and funded status for TSNB’s pension plan for the years ended December 31, 2021, 2020 and 2019 are as follows:

Details

  
2021
    
2020
    
2019
  
Change in benefit obligation:
                  
Benefit obligation at beginning of period
  
$
23,467
    
$
21,908
    
$
18,979
  
Interest cost
    
575
      
687
      
817
  
Benefits paid
    
(778
)
    
(736
)
    
(688
)
Change in plan provisions
    
--
      
--
      
--
  
Actuarial loss (gain)
    
(1,183
)
    
1,608
      
2,800
 
Benefit obligation end of period
  
$
22,081
    
$
23,467
    
$
21,908
  
Change in plan assets:
                        
Fair value of plan assets at beginning of period
  
$
25,985
    
$
24,454
    
$
22,669
  
Actual return on plan assets
    
616
      
2,337
      
2,544
 
Employer contribution
    
--
      
--
      
--
  
Expenses paid
    
(73
)
    
(69
)
    
(71
 )
Benefits paid
    
(778
)
    
(737
)
    
(688
)
Fair value of plan assets at end of period
  
$
25,750
    
$
25,985
    
$
24,454
  
Funded Status
  
$
3,669
    
$
2,518
    
$
2,546
  
Amounts recognized in statement of financial position:
                        
Non-current assets
  
$
3,669
    
$
2,518
    
$
2,546
  
Non-current liabilities
    
--
      
--
      
--
  
Net amount recognized
  
$
3,669
    
$
2,518
    
$
2,546
  
Weighted average assumptions used:
                        
Discount rate
    
2.90

%

    
2.50

%

    
3.20

%
Rate of compensation increases
    
N/A
      
N/A
      
N/A
  
The following benefit payments are expected to be paid in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter:
Fiscal Year
    
Other Benefits
  
2022
    
$
939
  
2023
      
1,029
  
2024
      
1,105
  
2025
      
1,161
  
2026
      
1,197
  
2027-2031
    
$
6,249
  
Description of Significant Gains and Losses in Obligations:
For fiscal year ended December 31, 2021, the benefit obligation experienced a net actuarial gain that was primarily attributable to the discount rate increase to 2.90%, compared to 2.50% in the prior year. For fiscal year ended December 31, 2020, the benefit obligation experienced a net actuarial loss that was primarily attributable to the discount rate decrease to 2.50%, compared to 3.20% in the prior year. 
The plan’s assets measured at fair value on a recurring basis consisted of the following as of December 31, 2021:

Details

  
Level 1
    
Level 2
    
Level 3
  
Investments in commingled funds
  
$
--
    
$
25,750
    
$
--
  
Total plan assets at fair value
  
$
--
    
$
25,750
    
$
--
  
The plan’s assets measured at fair value on a recurring basis consisted of the following as of December 31, 2020:

Details

  
Level 1
    
Level 2
    
Level 3
  
Investments in mutual funds
  
$
--
    
$
25,985
    
$
--
  
Total plan assets at fair value
  
$
--
    
$
25,985
    
$
--
TSNB’s pension plan weighted average asset allocations on December 31, 2021, by asset category are as follows:
 
Asset Category
  
December 31, 2021
    
Target
allocation
2022
  
Equity securities
    
10
%
    
10
%
Debt securities
    
90
%
    
90
%
Total
    
100
%
    
100
%

TSNB’s primary policy goals regarding the plan’s assets are to (1) provide liquidity to meet the Plan benefit payments and expenses payable from the Plan, (2) offer a reasonable probability of achieving a growth of assets that will assist in closing the Plan’s funding gap, and (3) manage the Plan’s assets in a liability framework. Plan assets are currently invested in commingled funds with various debt and equity investment objectives. The target asset allocation for the plan assets is 90% debt, or fixed income securities, and 10% equity securities. Individual funds are evaluated periodically based on comparisons to benchmark indices and peer group funds and investment decisions are made by TSNB in accordance with the policy goals. Actual allocation to each asset category fluctuates and may not be within the target allocation specified above due to changes in market conditions.


The estimated expected return on assets of the plan is based on assumptions derived from, among other things, the historical return on assets of the plan, the current and expected investment allocation of assets held by the plan and the current and expected future rates of return in the debt and equity markets for investments held by the plan. The obligations under the plan could differ from the obligation currently recorded, if management's estimates are not consistent with actual investment performance.