| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 1 | coming into force | Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 1 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2 | coming into force | Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 1 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words omitted | The Control of Substances Hazardous to Health (Amendment) Regulations (Northern Ireland) 2005 | 2005 No. 165 | reg. 3(a)(i) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words omitted | The Control of Substances Hazardous to Health (Amendment) Regulations (Northern Ireland) 2005 | 2005 No. 165 | reg. 3(a)(ii) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words added | The Control of Substances Hazardous to Health (Amendment) Regulations (Northern Ireland) 2005 | 2005 No. 165 | reg. 3(a)(iii) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words added | The Control of Substances Hazardous to Health (Amendment) Regulations (Northern Ireland) 2005 | 2005 No. 165 | reg. 3(a)(v) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words substituted | The Chemicals (Hazard Information and Packaging for Supply) Regulations (Northern Ireland) 2009 | 2009 No. 238 | reg. 17 Sch. 7 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words omitted | The Chemicals (Hazard Information and Packaging for Supply) Regulations (Northern Ireland) 2009 | 2009 No. 238 | reg. 17 Sch. 7 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words added | The Chemicals (Hazard Information and Packaging for Supply) Regulations (Northern Ireland) 2009 | 2009 No. 238 | reg. 17 Sch. 7 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words substituted | The Classification, Labelling and Packaging of Chemicals (Amendment) Regulations (Northern Ireland) 2015 | 2015 No. 265 | reg. 9(2)(a) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words omitted | The Classification, Labelling and Packaging of Chemicals (Amendment) Regulations (Northern Ireland) 2015 | 2015 No. 265 | reg. 9(2)(b) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words inserted | The Classification, Labelling and Packaging of Chemicals (Amendment) Regulations (Northern Ireland) 2015 | 2015 No. 265 | reg. 9(2)(c) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words inserted | The Classification, Labelling and Packaging of Chemicals (Amendment) Regulations (Northern Ireland) 2015 | 2015 No. 265 | reg. 9(2)(d) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words inserted | The Classification, Labelling and Packaging of Chemicals (Amendment) Regulations (Northern Ireland) 2015 | 2015 No. 265 | reg. 9(2)(e) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words substituted | The Classification, Labelling and Packaging of Chemicals (Amendment) Regulations (Northern Ireland) 2015 | 2015 No. 265 | reg. 9(2)(f) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words omitted | The Classification, Labelling and Packaging of Chemicals (Amendment) Regulations (Northern Ireland) 2015 | 2015 No. 265 | reg. 9(2)(g) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words substituted | The Classification, Labelling and Packaging of Chemicals (Amendment) Regulations (Northern Ireland) 2015 | 2015 No. 265 | reg. 9(2)(h) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words omitted | The Classification, Labelling and Packaging of Chemicals (Amendment) Regulations (Northern Ireland) 2015 | 2015 No. 265 | reg. 9(2)(i) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | word substituted | The Classification, Labelling and Packaging of Chemicals (Amendment) Regulations (Northern Ireland) 2015 | 2015 No. 265 | reg. 9(2)(j)(i) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words substituted | The Classification, Labelling and Packaging of Chemicals (Amendment) Regulations (Northern Ireland) 2015 | 2015 No. 265 | reg. 9(2)(j)(ii) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1) | words substituted | The Chemicals (Health and Safety) and Genetically Modified Organisms (Contained Use) (Amendment etc.) (EU Exit) Regulations 2019 | 2019 No. 720 | Sch. 1 para. 5(2) | See note |   This amendment not applied to legislation.gov.uk. Sch. 1 para. 5 omitted immediately before IP completion day by virtue of S.I. 2020/1567, reg. 1(2), Sch. 1 para. 3 |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 2(1)(b) | words substituted | The Control of Substances Hazardous to Health (Amendment) Regulations (Northern Ireland) 2005 | 2005 No. 165 | reg. 3(a)(iv) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 3 | coming into force | Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 1 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 3(3) | substituted | The Control of Substances Hazardous to Health (Amendment) Regulations (Northern Ireland) 2005 | 2005 No. 165 | reg. 3(b) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 4 | coming into force | Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 1 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 4(2)(a) | omitted | The REACH Enforcement Regulations 2008 | 2008 No. 2852 | Sch. 10 Pt. 5 para. 6 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 4(3) | revoked | The REACH Enforcement Regulations 2008 | 2008 No. 2852 | Sch. 10 Pt. 4 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 5 | coming into force | Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 1 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 5(1)(a)(ii) | words substituted | The Control of Asbestos Regulations (Northern Ireland) 2007 | 2007 No. 31 | Sch. 6 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 5(1)(a)(ii) | words substituted | The Control of Asbestos Regulations (Northern Ireland) 2012 | 2012 No. 179 | reg. 33(2) Sch. 4 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 5(2)(c) | words substituted | The Human Medicines Regulations 2012 | 2012 No. 1916 | Sch. 34 para. 111 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 6 | coming into force | Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 1 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 6(2)(f) | words substituted | The Control of Substances Hazardous to Health (Amendment) Regulations (Northern Ireland) 2005 | 2005 No. 165 | reg. 3(c) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 7 | coming into force | Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 1 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 7(7) | substituted | The Control of Substances Hazardous to Health (Amendment) Regulations (Northern Ireland) 2005 | 2005 No. 165 | reg. 3(d)(i) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 7(7)(c)(i) | words substituted | The Classification, Labelling and Packaging of Chemicals (Amendment) Regulations (Northern Ireland) 2015 | 2015 No. 265 | reg. 9(3)(a) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 7(7)(c)(ii) | words substituted | The Classification, Labelling and Packaging of Chemicals (Amendment) Regulations (Northern Ireland) 2015 | 2015 No. 265 | reg. 9(3)(b) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 7(8) | omitted | The Control of Substances Hazardous to Health (Amendment) Regulations (Northern Ireland) 2005 | 2005 No. 165 | reg. 3(d)(ii) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 7(9)(a) | words substituted | The Personal Protective Equipment (Enforcement) Regulations 2018 | 2018 No. 390 | Sch. 5 para. 5(a) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 7(12) | inserted | The Personal Protective Equipment (Enforcement) Regulations 2018 | 2018 No. 390 | Sch. 5 para. 5(b) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 7(12) | words inserted | The Health and Safety (Amendment) (Northern Ireland) (EU Exit) Regulations 2018 | 2018 No. 1377 | reg. 7(2) | See note |   This amendment not applied to legislation.gov.uk. S.I. 2018/1377 revoked immediately before IP completion day by S.R. 2020/330, regs. 1(3), 13 |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 7(12) | words omitted | The Health and Safety (Amendment) (Northern Ireland) (EU Exit) Regulations 2018 | 2018 No. 1377 | reg. 7(2) | See note |   This amendment not applied to legislation.gov.uk. S.I. 2018/1377 revoked immediately before IP completion day by S.R. 2020/330, regs. 1(3), 13 |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 7(12) | words omitted | The Product Safety and Metrology etc. (Amendment etc.) (EU Exit) Regulations 2019 | 2019 No. 696 | Sch. 35 para. 2(5) | See note |   This amendment not applied to legislation.gov.uk. Sch. 35 para. 2(5)(6) omitted immediately before IP completion day by virtue of S.I. 2020/1460, reg. 1(4), Sch. 3 para. 24(3) |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 8 | coming into force | Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 1 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 9 | coming into force | Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 1 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 9(1) | substituted | The Control of Substances Hazardous to Health (Amendment) Regulations (Northern Ireland) 2005 | 2005 No. 165 | reg. 3(e) | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 10 | coming into force | Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 1 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 11 | coming into force | Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 1 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 12 | coming into force | Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 1 | Not yet | |
| Control of Substances Hazardous to Health Regulations (Northern Ireland) 2003 | 2003 No. 34 | reg. 12(2)(a)(ii) | words substituted | The Control of Substances Hazardous to Health (Amendment) Regulations (Northern Ireland) 2005 | 2005 No. 165 | reg. 3(f)(i) | Not yet | |