296-17-880  <<  296-17-885 >>   296-17-890

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WAC 296-17-885

Table III.

Expected Loss Rates and Primary Ratios
by Risk Classification and Fiscal Year
Expected Loss Rates in Dollars Per Worker Hour
Effective January 1, 2026
Class
2022
2023
2024
Primary Ratio
101
0.5839
0.5575
0.4946
0.426
103
0.8117
0.7840
0.7189
0.432
104
0.6262
0.5951
0.5205
0.415
105
0.7163
0.6842
0.6043
0.498
106
2.2249
2.1485
1.9809
0.393
107
0.5568
0.5301
0.4647
0.457
108
0.6262
0.5951
0.5205
0.415
112
0.4932
0.4720
0.4208
0.457
201
1.3136
1.2472
1.0917
0.374
202
1.1751
1.1160
0.9752
0.403
210
0.6692
0.6393
0.5688
0.386
212
0.7877
0.7537
0.6746
0.409
214
1.0070
0.9523
0.8211
0.412
217
0.6805
0.6490
0.5721
0.452
219
0.4428
0.4218
0.3699
0.462
301
0.6671
0.6402
0.5756
0.459
302
1.0984
1.0428
0.9099
0.433
303
1.2590
1.1967
1.0494
0.426
306
0.5208
0.4951
0.4319
0.458
307
0.5678
0.5409
0.4743
0.461
308
0.4530
0.4353
0.3917
0.495
403
0.9808
0.9348
0.8247
0.431
502
0.6418
0.6097
0.5321
0.461
504
1.1208
1.0724
0.9601
0.406
507
1.8140
1.7451
1.5858
0.415
508
0.9726
0.9208
0.7987
0.403
509
0.5696
0.5408
0.4725
0.363
510
1.4534
1.3945
1.2578
0.416
511
1.0770
1.0250
0.8989
0.439
512
0.7843
0.7514
0.6718
0.445
513
0.6290
0.6000
0.5299
0.455
514
0.9207
0.8777
0.7706
0.480
516
0.8928
0.8517
0.7522
0.449
517
1.0638
1.0174
0.9112
0.388
518
0.7561
0.7216
0.6381
0.415
519
1.1877
1.1298
0.9925
0.420
521
0.5527
0.5300
0.4768
0.422
601
0.3887
0.3684
0.3179
0.454
602
0.5054
0.4763
0.4069
0.396
603
0.5830
0.5527
0.4807
0.404
604
0.6812
0.6539
0.5865
0.475
606
0.4274
0.4055
0.3502
0.532
607
0.5509
0.5224
0.4527
0.489
608
0.2662
0.2526
0.2190
0.476
701
0.4776
0.4535
0.3970
0.374
803
0.4502
0.4273
0.3704
0.483
901
0.7561
0.7216
0.6381
0.415
1002
0.5222
0.4993
0.4435
0.456
1003
0.4266
0.4068
0.3579
0.483
1004
0.3823
0.3618
0.3128
0.416
1005
3.8639
3.6948
3.2817
0.456
1006
0.2007
0.1903
0.1639
0.527
1007
0.2472
0.2354
0.2060
0.502
1101
0.7294
0.6914
0.5970
0.518
1102
1.1277
1.0697
0.9338
0.398
1103
0.7447
0.7061
0.6108
0.493
1104
0.4637
0.4460
0.3998
0.507
1105
0.5463
0.5187
0.4502
0.500
1106
0.3277
0.3129
0.2749
0.555
1108
0.4969
0.4728
0.4127
0.511
1109
1.4323
1.3602
1.1897
0.432
1301
0.4584
0.4380
0.3891
0.450
1303
0.3146
0.2970
0.2527
0.525
1304
0.0133
0.0126
0.0110
0.477
1305
0.3538
0.3348
0.2893
0.455
1401
0.2892
0.2772
0.2481
0.503
1404
0.6900
0.6582
0.5787
0.540
1405
0.6158
0.5855
0.5089
0.528
1407
0.6514
0.6174
0.5339
0.516
1408
0.2525
0.2400
0.2103
0.496
1501
0.6969
0.6587
0.5642
0.497
1507
0.3580
0.3421
0.3011
0.538
1701
0.5371
0.5141
0.4606
0.417
1702
0.7916
0.7507
0.6573
0.317
1703
0.6647
0.6298
0.5471
0.408
1704
0.5371
0.5141
0.4606
0.417
1801
0.4060
0.3859
0.3381
0.423
1802
0.6495
0.6175
0.5409
0.423
2002
0.5471
0.5218
0.4592
0.474
2004
0.4843
0.4639
0.4098
0.561
2007
0.4751
0.4577
0.4161
0.441
2008
0.2247
0.2135
0.1861
0.520
2009
0.3005
0.2885
0.2570
0.556
2101
0.4880
0.4694
0.4238
0.487
2102
0.5037
0.4838
0.4344
0.498
2103
1.2612
1.1890
1.0076
0.564
2104
0.3282
0.3201
0.2970
0.572
2105
0.7041
0.6666
0.5731
0.517
2106
0.4599
0.4407
0.3925
0.515
2201
0.2914
0.2807
0.2544
0.501
2202
0.6770
0.6417
0.5543
0.507
2203
0.4405
0.4225
0.3753
0.555
2204
0.2914
0.2807
0.2544
0.501
2401
0.3084
0.2943
0.2593
0.468
2903
0.4862
0.4679
0.4216
0.513
2904
0.4429
0.4267
0.3874
0.419
2905
0.4474
0.4305
0.3866
0.530
2906
0.4031
0.3885
0.3529
0.450
2907
0.3368
0.3253
0.2955
0.523
2908
0.5742
0.5540
0.5016
0.510
2909
0.3437
0.3317
0.3029
0.471
3101
0.5832
0.5581
0.4940
0.501
3102
0.2330
0.2220
0.1944
0.473
3103
0.2551
0.2446
0.2198
0.424
3104
0.6232
0.5953
0.5248
0.530
3105
0.6371
0.6158
0.5639
0.462
3303
0.3118
0.2968
0.2592
0.523
3304
0.5429
0.5228
0.4739
0.470
3309
0.3234
0.3081
0.2701
0.498
3402
0.3412
0.3273
0.2923
0.503
3403
0.1105
0.1060
0.0942
0.519
3404
0.4276
0.4086
0.3605
0.499
3405
0.1983
0.1903
0.1694
0.527
3406
0.2022
0.1929
0.1697
0.525
3407
0.6613
0.6268
0.5439
0.434
3408
0.2104
0.1993
0.1711
0.539
3409
0.1471
0.1407
0.1242
0.547
3410
0.1471
0.1407
0.1242
0.547
3411
0.3591
0.3421
0.3001
0.482
3412
0.4589
0.4353
0.3788
0.432
3414
0.6345
0.6021
0.5217
0.506
3415
1.1205
1.0632
0.9228
0.504
3501
0.2516
0.2432
0.2227
0.462
3503
0.2988
0.2856
0.2521
0.523
3506
0.5374
0.5129
0.4533
0.429
3509
0.4188
0.3960
0.3385
0.559
3510
0.3154
0.3033
0.2717
0.548
3511
0.6580
0.6318
0.5670
0.489
3512
0.2854
0.2745
0.2471
0.516
3513
0.3922
0.3736
0.3279
0.482
3602
0.0725
0.0693
0.0615
0.524
3603
0.3769
0.3618
0.3243
0.489
3604
0.7192
0.6908
0.6197
0.485
3605
0.3412
0.3273
0.2923
0.503
3701
0.2330
0.2220
0.1944
0.473
3702
0.2576
0.2469
0.2187
0.555
3708
0.4994
0.4772
0.4228
0.478
3802
0.1455
0.1403
0.1273
0.485
3808
0.2843
0.2716
0.2407
0.470
3901
0.1118
0.1077
0.0964
0.581
3902
0.4542
0.4352
0.3868
0.541
3903
0.6693
0.6414
0.5699
0.541
3905
0.1146
0.1106
0.0998
0.557
3906
0.4485
0.4296
0.3812
0.536
3909
0.2467
0.2365
0.2097
0.579
4101
0.1467
0.1413
0.1268
0.543
4103
0.5056
0.4857
0.4350
0.513
4107
0.1429
0.1354
0.1167
0.492
4108
0.1863
0.1768
0.1527
0.563
4109
0.1830
0.1755
0.1568
0.516
4201
0.6571
0.6167
0.5182
0.466
4301
0.6534
0.6288
0.5665
0.513
4302
0.6357
0.6073
0.5368
0.489
4304
0.6572
0.6365
0.5869
0.474
4305
0.9737
0.9205
0.7907
0.483
4401
0.3118
0.2968
0.2592
0.523
4402
0.5070
0.4820
0.4192
0.511
4404
0.4837
0.4647
0.4192
0.464
4501
0.1345
0.1282
0.1118
0.572
4502
0.0443
0.0422
0.0370
0.478
4504
0.1221
0.1182
0.1073
0.566
4802
0.4015
0.3863
0.3496
0.471
4803
0.4123
0.3975
0.3579
0.578
4804
0.4601
0.4404
0.3921
0.496
4805
0.3290
0.3172
0.2859
0.557
4806
0.1377
0.1317
0.1157
0.592
4808
0.4378
0.4207
0.3797
0.460
4809
0.2296
0.2209
0.1982
0.542
4810
0.2103
0.2020
0.1811
0.521
4811
0.4174
0.4057
0.3767
0.487
4812
0.3287
0.3158
0.2837
0.479
4813
0.3264
0.3139
0.2816
0.561
4814
0.1008
0.0984
0.0919
0.556
4815
0.2802
0.2719
0.2495
0.561
4816
0.2487
0.2435
0.2299
0.514
4900
0.1037
0.0990
0.0875
0.438
4901
0.0304
0.0290
0.0252
0.467
4902
0.0495
0.0470
0.0408
0.504
4903
0.1653
0.1563
0.1335
0.527
4904
0.0104
0.0100
0.0088
0.504
4905
0.3694
0.3549
0.3185
0.524
4906
0.0913
0.0865
0.0744
0.541
4907
0.0433
0.0422
0.0387
0.603
4908
0.0788
0.0773
0.0719
0.608
4909
0.0315
0.0310
0.0288
0.608
4910
0.4026
0.3835
0.3366
0.495
4911
0.0523
0.0500
0.0444
0.453
5001
5.7789
5.5006
4.8734
0.340
5002
0.4624
0.4388
0.3796
0.518
5003
1.9522
1.8500
1.6138
0.394
5004
0.7451
0.7190
0.6616
0.397
5005
0.7266
0.6910
0.6083
0.383
5006
0.8742
0.8298
0.7275
0.379
5101
0.6669
0.6339
0.5552
0.433
5103
0.6982
0.6712
0.6023
0.505
5106
0.6982
0.6712
0.6023
0.505
5108
0.6583
0.6214
0.5296
0.524
5109
0.3405
0.3244
0.2833
0.501
5201
0.2288
0.2195
0.1949
0.552
5204
0.8716
0.8201
0.6971
0.445
5206
0.2530
0.2424
0.2172
0.432
5207
0.1557
0.1499
0.1342
0.568
5208
0.4122
0.3968
0.3577
0.484
5209
0.4090
0.3921
0.3492
0.494
5300
0.0689
0.0655
0.0569
0.516
5301
0.0177
0.0169
0.0150
0.532
5302
0.0047
0.0045
0.0040
0.450
5305
0.0421
0.0398
0.0341
0.558
5306
0.0347
0.0330
0.0287
0.528
5307
0.5595
0.5292
0.4547
0.493
5308
0.0832
0.0803
0.0723
0.519
6103
0.0869
0.0836
0.0748
0.584
6104
0.3053
0.2918
0.2578
0.508
6105
0.4459
0.4216
0.3611
0.511
6107
0.1502
0.1462
0.1334
0.646
6108
0.2171
0.2100
0.1892
0.597
6109
0.1017
0.0965
0.0833
0.514
6110
0.3384
0.3195
0.2726
0.506
6120
0.2728
0.2583
0.2224
0.483
6121
0.3686
0.3490
0.3008
0.492
6201
0.4288
0.4072
0.3523
0.536
6202
0.7614
0.7275
0.6421
0.522
6203
0.0874
0.0855
0.0795
0.613
6204
0.1022
0.0988
0.0896
0.530
6205
0.1768
0.1695
0.1501
0.563
6206
0.1632
0.1567
0.1396
0.549
6207
0.7060
0.6766
0.6079
0.454
6208
0.1789
0.1738
0.1598
0.567
6209
0.2362
0.2290
0.2103
0.527
6301
0.0982
0.0939
0.0839
0.413
6303
0.0379
0.0361
0.0317
0.519
6305
0.0940
0.0902
0.0804
0.579
6306
0.3538
0.3366
0.2925
0.548
6308
0.0709
0.0673
0.0585
0.515
6309
0.1984
0.1895
0.1665
0.550
6402
0.1870
0.1805
0.1622
0.594
6403
0.1551
0.1479
0.1290
0.582
6404
0.2825
0.2707
0.2408
0.535
6405
0.4824
0.4596
0.4028
0.509
6406
0.1572
0.1500
0.1314
0.562
6407
0.2507
0.2396
0.2111
0.547
6408
0.4957
0.4743
0.4216
0.487
6409
0.5541
0.5269
0.4606
0.473
6410
0.2489
0.2385
0.2113
0.539
6411
0.0481
0.0465
0.0425
0.497
6501
0.0755
0.0715
0.0616
0.550
6502
0.0152
0.0146
0.0130
0.501
6503
0.0686
0.0645
0.0540
0.512
6504
0.2266
0.2185
0.1963
0.594
6505
0.1410
0.1364
0.1228
0.637
6506
0.1003
0.0957
0.0836
0.536
6509
0.2358
0.2272
0.2042
0.551
6510
0.3276
0.3091
0.2653
0.414
6511
0.2214
0.2115
0.1860
0.565
6512
0.0832
0.0793
0.0699
0.472
6601
0.2057
0.1954
0.1702
0.520
6602
0.5295
0.5079
0.4558
0.489
6603
0.2363
0.2275
0.2043
0.536
6604
0.0522
0.0500
0.0443
0.531
6605
0.2376
0.2281
0.2018
0.572
6607
0.1141
0.1092
0.0965
0.575
6608
0.3309
0.3127
0.2700
0.375
6620
3.0360
2.8506
2.3730
0.580
6704
0.1157
0.1097
0.0943
0.573
6705
0.7784
0.7560
0.6935
0.586
6706
0.2007
0.1941
0.1767
0.521
6707
8.6922
8.4830
7.7626
0.688
6708
7.5240
7.3645
6.9677
0.483
6709
0.2075
0.1989
0.1762
0.553
6801
0.6160
0.5720
0.4634
0.535
6802
0.8524
0.8061
0.6914
0.530
6803
0.4144
0.3887
0.3271
0.427
6804
0.2434
0.2315
0.2009
0.539
6809
2.6568
2.5656
2.3257
0.529
6901
0.0172
0.0192
0.0226
0.827
6902
0.6223
0.5926
0.5228
0.427
6903
2.5279
2.4132
2.1593
0.317
6904
1.3303
1.2503
1.0602
0.396
6905
0.9735
0.9164
0.7803
0.360
6906
0.3564
0.3637
0.3821
0.531
6907
0.6438
0.6158
0.5433
0.542
6908
0.3511
0.3358
0.2974
0.519
6909
0.0936
0.0897
0.0796
0.518
7100
0.0132
0.0125
0.0107
0.484
7101
0.0206
0.0197
0.0172
0.413
7103
0.8964
0.8455
0.7237
0.445
7104
0.0228
0.0217
0.0188
0.502
7105
0.0159
0.0151
0.0131
0.509
7106
0.2136
0.2040
0.1796
0.546
7107
0.3667
0.3484
0.3021
0.543
7108
0.3101
0.2953
0.2564
0.604
7109
0.0948
0.0901
0.0786
0.514
7110
0.3801
0.3615
0.3173
0.468
7111
0.2753
0.2581
0.2165
0.446
7112
0.6135
0.5889
0.5273
0.531
7113
0.4226
0.4011
0.3465
0.564
7114
0.6321
0.6046
0.5325
0.576
7115
0.5469
0.5238
0.4662
0.535
7116
0.5334
0.5059
0.4387
0.507
7117
0.8016
0.7652
0.6746
0.504
7118
1.1762
1.1197
0.9816
0.478
7119
1.4997
1.4182
1.2203
0.489
7120
4.8682
4.6025
3.9534
0.483
7121
5.1917
4.9462
4.3954
0.333
7122
0.3212
0.3086
0.2770
0.533
7200
2.1515
2.0152
1.6878
0.461
7201
1.5160
1.4226
1.1959
0.488
7202
0.0140
0.0133
0.0117
0.489
7203
0.0787
0.0767
0.0709
0.572
7204
0.0000
0.0000
0.0000
0.500
7205
0.0000
0.0000
0.0000
0.500
7301
0.5431
0.5260
0.4845
0.467
7302
0.8011
0.7754
0.7165
0.439
7307
0.3487
0.3338
0.2967
0.523
7308
0.2672
0.2576
0.2308
0.603
7309
0.2075
0.1989
0.1762
0.553
7400
2.4742
2.3176
1.9410
0.461
Expected Loss Rates in Dollars Per Sq. Ft.
of Wallboard Installed
Class
2022
2023
2024
Primary Ratio
540
0.0126
0.0121
0.0107
0.457
541
0.0057
0.0054
0.0048
0.445
550
0.0270
0.0258
0.0234
0.354
551
0.0093
0.0089
0.0080
0.346
[Statutory Authority: RCW 51.16.035, 51.32.073, 51.18.010, and 51.04.020(1). WSR 25-24-041, s 296-17-885, filed 11/26/25, effective 1/1/26; WSR 24-24-046, s 296-17-885, filed 11/26/24, effective 1/1/25; WSR 23-24-039, § 296-17-885, filed 11/30/23, effective 1/1/24; WSR 22-24-019, § 296-17-885, filed 11/30/22, effective 1/1/23; WSR 21-24-066, § 296-17-885, filed 11/30/21, effective 1/1/22; WSR 20-24-094, § 296-17-885, filed 11/30/20, effective 1/1/21; WSR 19-24-029, § 296-17-885, filed 11/25/19, effective 1/1/20; WSR 18-24-073, § 296-17-885, filed 11/30/18, effective 1/1/19; WSR 17-24-041, § 296-17-885, filed 11/30/17, effective 1/1/18; WSR 16-24-014, § 296-17-885, filed 11/29/16, effective 1/1/17; WSR 15-24-103, § 296-17-885, filed 12/1/15, effective 1/1/16; WSR 14-24-084, § 296-17-885, filed 12/1/14, effective 1/1/15; WSR 13-24-073, § 296-17-885, filed 11/30/13, effective 1/1/14. Statutory Authority: RCW 51.16.035, 51.32.073, 51.08.010, and 51.04.020(1). WSR 12-24-048, § 296-17-885, filed 11/30/12, effective 1/1/13; WSR 11-24-026, § 296-17-885, filed 12/1/11, effective 1/1/12. Statutory Authority: RCW 51.16.035, 51.32.073, 51.18.010, and 51.04.020(1). WSR 11-04-069, § 296-17-885, filed 1/28/11, effective 2/28/11; WSR 09-24-086, § 296-17-885, filed 11/30/09, effective 1/1/10; WSR 08-24-074, § 296-17-885, filed 12/1/08, effective 1/1/09; WSR 07-24-046, § 296-17-885, filed 12/1/07, effective 1/1/08; WSR 06-24-054, § 296-17-885, filed 12/1/06, effective 1/1/07. Statutory Authority: RCW 51.04.020, 51.16.035, and 51.32.073. WSR 05-23-162, § 296-17-885, filed 11/22/05, effective 1/1/06; WSR 04-24-025, § 296-17-885, filed 11/23/04, effective 1/1/05. Statutory Authority: RCW 51.04.020, 51.16.035, 51.32.073, and 51.18.010. WSR 03-24-066, § 296-17-885, filed 12/1/03, effective 1/1/04. Statutory Authority: RCW 51.16.035, 51.32.073, 51.18.010, and 51.04.020(1). WSR 02-24-029, § 296-17-885, filed 11/27/02, effective 1/1/03. Statutory Authority: RCW 51.04.020, 51.16.035, 51.32.073, 51.18.010. WSR 01-23-061, § 296-17-885, filed 11/20/01, effective 1/1/02; WSR 00-23-101, § 296-17-885, filed 11/21/00, effective 1/1/01. Statutory Authority: RCW 51.16.035, 51.04.020. WSR 00-14-052, § 296-17-885, filed 7/1/00, effective 7/1/00. Statutory Authority: RCW 51.04.020, 51.16.035 and 51.32.073. WSR 99-24-055, § 296-17-885, filed 11/29/99, effective 12/31/99; WSR 98-24-094, § 296-17-885, filed 12/1/98, effective 1/1/99; WSR 97-24-062, § 296-17-885, filed 12/1/97, effective 1/1/98; WSR 96-24-063, § 296-17-885, filed 11/29/96, effective 1/1/97. Statutory Authority: RCW 51.16.035. WSR 96-12-039, § 296-17-885, filed 5/31/96, effective 7/1/96. Statutory Authority: RCW 51.04.020. WSR 95-23-080, § 296-17-885, filed 11/20/95, effective 1/1/96; WSR 94-24-007, § 296-17-885, filed 11/28/94, effective 1/1/95; WSR 93-24-114, § 296-17-885, filed 12/1/93, effective 1/1/94. Statutory Authority: RCW 51.04.020(1) and 51.16.035. WSR 92-24-063, § 296-17-885, filed 11/30/92, effective 1/1/93; WSR 91-24-053, § 296-17-885, filed 11/27/91, effective 1/1/92; WSR 91-12-014, § 296-17-885, filed 5/31/91, effective 7/1/91; WSR 90-24-042, § 296-17-885, filed 11/30/90, effective 1/1/91; WSR 90-13-018, § 296-17-885, filed 6/8/90, effective 7/9/90; WSR 89-24-051 (Order 89-22), § 296-17-885, filed 12/1/89, effective 1/1/90. Statutory Authority: RCW 51.04.020(1). WSR 89-16-001 (Order 89-07), § 296-17-885, filed 7/20/89, effective 8/20/89. Statutory Authority: RCW 51.16.035 and 51.04.020. WSR 88-24-012 (Order 88-30), § 296-17-885, filed 12/1/88, effective 1/1/89. Statutory Authority: RCW 51.16.035. WSR 88-12-065 (Order 88-05), § 296-17-885, filed 5/31/88; WSR 88-12-050 (Order 88-06), § 296-17-885, filed 5/31/88, effective 7/1/88; WSR 88-06-047 (Order 87-33), § 296-17-885, filed 3/1/88; WSR 87-24-060 (Order 87-26), § 296-17-885, filed 12/1/87, effective 1/1/88; WSR 87-12-032 (Order 87-12), § 296-17-885, filed 5/29/87, effective 7/1/87. Statutory Authority: RCW 51.04.020(1) and 51.16.035. WSR 86-24-042 (Order 86-41), § 296-17-885, filed 11/26/86. Statutory Authority: RCW 51.16.035. WSR 86-12-041 (Order 86-18), § 296-17-885, filed 5/30/86, effective 7/1/86; WSR 85-24-032 (Order 85-33), § 296-17-885, filed 11/27/85, effective 1/1/86; WSR 85-06-026 (Order 85-7), § 296-17-885, filed 2/28/85, effective 4/1/85; WSR 84-24-016 (Order 84-23), § 296-17-885, filed 11/28/84, effective 1/1/85; WSR 83-24-017 (Order 83-36), § 296-17-885, filed 11/30/83, effective 1/1/84; WSR 82-24-047 (Order 82-38), § 296-17-885, filed 11/29/82, effective 1/1/83; WSR 81-24-042 (Order 81-30), § 296-17-885, filed 11/30/81, effective 1/1/82; WSR 80-17-016 (Order 80-23), § 296-17-885, filed 11/13/80, effective 1/1/81. Statutory Authority: RCW 51.04.030 and 51.16.035. WSR 79-12-086 (Order 79-18), § 296-17-885, filed 11/30/79, effective 1/1/80. Statutory Authority: RCW 51.04.020(1) and 51.16.035. WSR 78-12-043 (Order 78-23), § 296-17-885, filed 11/27/78, effective 1/1/79, effective 1/1/80. Order 77-27, § 296-17-885, filed 11/30/77, effective 1/1/78; Emergency Order 77-25, § 296-17-885, filed 12/1/77; Order 77-10, § 296-17-885, filed 5/31/77; Order 76-36, § 296-17-885, filed 11/30/76; Order 76-18, § 296-17-885, filed 5/28/76, effective 7/1/76; Order 75-38, § 296-17-885, filed 11/24/75, effective 1/1/76; Order 74-40, § 296-17-885, filed 11/27/74, effective 1/1/75; Order 73-22, § 296-17-885, filed 11/9/73, effective 1/1/74.]