Union Membership, Coverage, Density and Employment by Occupation, 2001 (details in table note)
COC	Occupation Name	Obs	Employment	Members	Covered	%Mem	%Cov
	EXECUTIVE, ADMINISTRATIVE, AND MANAGERIAL OCCUPATIONS	24,076	16,912,092	958,927	1,136,105	5.7	6.7
4	Chief executives and general administrators, public administration	31	21,334	4,580	5,875	21.5	27.5
5	Administrators and officials, public administration	1,146	719,173	128,054	155,878	17.8	21.7
6	Administrators, protective services	95	62,771	11,583	12,996	18.5	20.7
7	Financial managers	1,009	713,804	7,904	12,945	1.1	1.8
8	Personnel and labor relations managers	313	220,538	3,366	5,432	1.5	2.5
9	Purchasing managers	196	139,583	5,440	6,090	3.9	4.4
13	Managers, marketing, advertising, and public relations	1,028	756,280	8,467	13,489	1.1	1.8
14	Administrators, education and related fields	1,158	776,591	133,785	163,429	17.2	21.0
15	Managers, medicine and health	1,070	740,102	27,799	32,208	3.8	4.4
17	Managers, food serving and lodging establishments	1,515	1,075,076	26,673	34,329	2.5	3.2
18	Managers, properties and real estate	572	403,771	14,731	17,166	3.6	4.3
19	Funeral directors	65	48,131	0	0	0.0	0.0
21	Managers, service organizations, n.e.c.	955	614,715	49,523	52,391	8.1	8.5
22	Managers and administrators, n.e.c.	8,473	6,056,503	233,604	265,617	3.9	4.4
23	Accountants and auditors	2,107	1,496,676	78,020	90,303	5.2	6.0
24	Underwriters	151	104,868	803	803	0.8	0.8
25	Other financial officers	1,111	772,021	15,898	26,571	2.1	3.4
26	Management analysts	398	292,734	7,760	13,186	2.7	4.5
27	Personnel, training, and labor relations specialists	871	631,512	47,784	54,849	7.6	8.7
28	Purchasing agents and buyers, farm products	15	11,591	0	0	0.0	0.0
29	Buyers, wholesale and retail trade except farm products	295	205,926	10,606	10,881	5.2	5.3
33	Purchasing agents and buyers, n.e.c.	370	257,843	15,136	15,774	5.9	6.1
34	Business and promotion agents	27	18,334	2,190	2,190	11.9	11.9
35	Construction inspectors	85	56,581	17,404	18,411	30.8	32.5
36	Inspectors and compliance officers, except construction	335	220,949	76,771	84,849	34.7	38.4
37	Management related occupations, n.e.c.	685	494,683	31,045	40,442	6.3	8.2
	PROFESSIONAL SPECIALTY OCCUPATIONS, EXC. TEACHERS	18,567	12,989,665	1,247,146	1,470,427	9.6	11.3
43	Architects	218	164,162	9,936	10,610	6.1	6.5
44	Aerospace engineers	100	82,506	6,729	7,446	8.2	9.0
45	Metallurgical and materials engineers	35	25,823	2,898	2,898	11.2	11.2
46	Mining engineers	4	1,319	0	0	0.0	0.0
47	Petroleum engineers	29	21,428	0	155	0.0	0.7
48	Chemical engineers	91	72,455	2,393	3,476	3.3	4.8
49	Nuclear engineers	20	12,680	424	424	3.3	3.3
53	Civil engineers	384	274,964	36,078	41,323	13.1	15.0
54	Agricultural engineers	0
55	Electrical and electronic engineers	921	706,256	29,812	38,382	4.2	5.4
56	Industrial engineers	331	255,164	17,880	20,454	7.0	8.0
57	Mechanical engineers	432	315,179	16,124	18,404	5.1	5.8
58	Marine and naval architects	14	9,347	1,097	1,277	11.7	13.7
59	Engineers, n.e.c.	308	226,051	8,880	10,445	3.9	4.6
63	Surveyors and mapping scientists	30	19,418	2,805	2,805	14.4	14.4
64	Computer systems analysts and scientists	2,193	1,672,427	64,677	83,920	3.9	5.0
65	Operations and systems researchers and analysts	321	226,209	12,694	14,304	5.6	6.3
66	Actuaries	25	17,844	0	0	0.0	0.0
67	Statisticians	41	28,492	4,816	4,816	16.9	16.9
68	Mathematical scientists, n.e.c.	7	6,148	0	0	0.0	0.0
69	Physicists and astronomers	31	21,199	2,130	2,283	10.0	10.8
73	Chemists, except biochemists	203	150,138	4,866	6,462	3.2	4.3
74	Atmospheric and space scientists	21	13,685	1,813	3,304	13.2	24.1
75	Geologists and geodesists	64	41,924	0	825	0.0	2.0
76	Physical scientists, n.e.c.	69	44,492	7,028	7,141	15.8	16.1
77	Agricultural and food scientists	58	34,068	2,678	2,678	7.9	7.9
78	Biological and life scientists	182	115,340	9,922	11,129	8.6	9.6
79	Forestry and conservation scientists	54	19,689	3,304	3,814	16.8	19.4
83	Medical scientists	127	98,472	8,127	8,127	8.3	8.3
84	Physicians	792	537,856	36,107	45,249	6.7	8.4
85	Dentists	80	55,833	1,497	1,497	2.7	2.7
86	Veterinarians	43	27,179	0	0	0.0	0.0
87	Optometrists	23	17,393	0	0	0.0	0.0
88	Podiatrists	4	3,310	0	0	0.0	0.0
89	Health diagnosing practitioners, n.e.c.	16	11,019	222	222	2.0	2.0
95	Registered nurses	3,254	2,128,007	328,971	376,673	15.5	17.7
96	Pharmacists	285	196,443	15,894	18,612	8.1	9.5
97	Dietitians	138	95,689	7,072	8,113	7.4	8.5
98	Respiratory therapists	116	78,226	5,318	6,087	6.8	7.8
99	Occupational therapists	84	54,720	4,669	9,353	8.5	17.1
103	Physical therapists	197	139,206	9,796	12,082	7.0	8.7
104	Speech therapists	155	93,181	35,992	42,861	38.6	46.0
105	Therapists, n.e.c.	122	82,692	6,099	7,270	7.4	8.8
106	Physicians' assistants	105	63,902	9,419	9,852	14.7	15.4
163	Counselors, Educational and Vocational	409	264,800	81,821	92,649	30.9	35.0
164	Librarians	322	208,777	47,043	53,528	22.5	25.6
165	Archivists and curators	46	29,921	2,990	3,292	10.0	11.0
166	Economists	174	123,981	1,047	5,072	0.8	4.1
167	Psychologists	289	192,551	35,123	41,986	18.2	21.8
168	Sociologists	4	3,265	634	1,492	19.4	45.7
169	Social scientists, n.e.c.	53	28,126	1,369	1,603	4.9	5.7
173	Urban planners	21	14,932	2,230	3,793	14.9	25.4
174	Social workers	1,154	780,442	170,876	196,188	21.9	25.1
175	Recreation workers	178	110,562	7,463	9,609	6.8	8.7
176	Clergy	500	335,289	4,114	6,743	1.2	2.0
177	Religious workers, n.e.c.	255	180,552	0	669	0.0	0.4
178	Lawyers and Judges	940	640,811	42,573	52,867	6.6	8.3
183	Authors	87	57,685	3,375	4,235	5.9	7.3
184	Technical writers	98	75,556	5,240	5,240	6.9	6.9
185	Designers	806	608,047	17,701	20,928	2.9	3.4
186	Musicians and composers	129	94,106	13,572	14,611	14.4	15.5
187	Actors and directors	128	99,802	16,070	16,824	16.1	16.9
188	Painters, sculptors, craft-artists, and artist printmakers	164	118,873	6,414	7,493	5.4	6.3
189	Photographers	117	79,569	5,628	7,234	7.1	9.1
193	Dancers	22	17,362	0	0	0.0	0.0
194	Artists, performers, and related workers, n.e.c.	129	93,559	14,951	17,709	16.0	18.9
195	Editors and reporters	377	268,107	17,537	23,067	6.5	8.6
197	Public relations specialists	245	170,253	11,451	14,709	6.7	8.6
198	Announcers	53	35,539	3,863	4,350	10.9	12.2
199	Athletes	140	95,666	15,897	19,766	16.6	20.7
	TEACHERS, POSTSECONDARY	1,512	1,001,767	173,864	214,630	17.4	21.4
113	Earth, environmental, and marine science teachers	10	8,259	1,520	2,324	18.4	28.1
114	Biological science teachers	58	35,952	5,992	6,133	16.7	17.1
115	Chemistry teachers	40	24,646	3,112	5,162	12.6	20.9
116	Physics teachers	22	14,474	1,292	1,292	8.9	8.9
117	Natural science teachers, n.e.c.	5	4,260	2,559	2,559	60.1	60.1
118	Psychology teachers	26	18,772	3,338	4,025	17.8	21.4
119	Economics teachers	24	17,062	4,244	4,405	24.9	25.8
123	History teachers	27	15,280	2,799	2,799	18.3	18.3
124	Political science teachers	13	10,251	698	2,895	6.8	28.2
125	Sociology teachers	14	10,347	2,081	2,257	20.1	21.8
126	Social science teachers, n.e.c.	13	7,421	1,831	1,831	24.7	24.7
127	Engineering teachers	38	23,753	2,814	3,467	11.8	14.6
128	Mathematical science teachers	61	44,102	6,541	11,372	14.8	25.8
129	Computer science teachers	44	31,175	5,663	7,092	18.2	22.7
133	Medical science teachers	19	12,805	2,189	2,189	17.1	17.1
134	Health specialties teachers	75	46,475	11,268	12,319	24.2	26.5
135	Business, commerce, and marketing teachers	35	22,889	7,981	7,981	34.9	34.9
136	Agriculture and forestry teachers	10	4,815	222	293	4.6	6.1
137	Art, drama, and music teachers	71	45,777	9,491	9,491	20.7	20.7
138	Physical education teachers	10	10,181	2,622	3,404	25.8	33.4
139	Education teachers	26	18,259	4,491	4,491	24.6	24.6
143	English teachers	87	56,594	12,549	16,893	22.2	29.8
144	Foreign language teachers	43	29,918	4,288	5,797	14.3	19.4
145	Law teachers	17	12,487	1,649	1,649	13.2	13.2
146	Social work teachers	3	893	0	0	0.0	0.0
147	Theology teachers	26	16,675	139	220	0.8	1.3
148	Trade and industrial teachers	4	2,872	2,089	2,089	72.8	72.8
149	Home economics teachers	1	462	0	0	0.0	0.0
153	Teachers, postsecondary, n.e.c.	10	6,289	2,399	3,035	38.1	48.3
154	Postsecondary teachers, subject not specified	680	448,625	68,002	87,169	15.2	19.4
	TEACHERS, EXCEPT POSTSECONDARY	7,658	5,288,254	2,276,639	2,528,427	43.1	47.8
155	Teachers, prekindergarten and kindergarten	880	659,521	107,336	125,323	16.3	19.0
156	Teachers, elementary school	3,242	2,235,320	1,208,536	1,329,658	54.1	59.5
157	Teachers, secondary school	1,948	1,315,515	677,902	765,155	51.5	58.2
158	Teachers, special education	547	354,690	207,943	227,617	58.6	64.2
159	Teachers, n.e.c.	1,041	723,208	74,922	80,674	10.4	11.2
	TECHNICIANS AND RELATED SUPPORT OCCUPATIONS	6,242	4,384,767	483,109	543,337	11.0	12.4
203	Clinical laboratory technologists and technicians	508	345,361	38,540	44,325	11.2	12.8
204	Dental hygienists	179	110,793	2,815	2,815	2.5	2.5
205	Health record technologists and technicians	25	19,611	0	614	0.0	3.1
206	Radiologic technicians	251	170,918	13,112	13,712	7.7	8.0
207	Licensed practical nurses	549	372,444	41,652	45,717	11.2	12.3
208	Health technologists and technicians, n.e.c.	1,076	767,285	105,346	113,630	13.7	14.8
213	Electrical and electronic technicians	661	466,583	60,768	68,194	13.0	14.6
214	Industrial engineering technicians	10	8,155	2,731	3,553	33.5	43.6
215	Mechanical engineering technicians	21	16,768	4,789	4,789	28.6	28.6
216	Engineering technicians, n.e.c.	316	225,723	26,237	27,813	11.6	12.3
217	Drafting occupations	296	207,352	15,948	16,904	7.7	8.2
218	Surveying and mapping technicians	94	64,513	5,318	5,606	8.2	8.7
223	Biological technicians	179	119,719	10,080	10,897	8.4	9.1
224	Chemical technicians	104	69,170	6,802	7,382	9.8	10.7
225	Science technicians, n.e.c.	127	90,340	15,437	16,478	17.1	18.2
226	Airplane pilots and navigators	193	132,539	71,570	76,026	54.0	57.4
227	Air traffic controllers	41	26,516	12,032	12,406	45.4	46.8
228	Broadcast equipment operators	58	44,953	6,426	7,732	14.3	17.2
229	Computer programmers	837	631,982	25,009	36,510	4.0	5.8
233	Tool programmers, numerical control	24	17,064	3,040	3,040	17.8	17.8
234	Legal assistants	550	387,303	8,565	18,302	2.2	4.7
235	Technicians, n.e.c.	143	89,674	6,892	6,892	7.7	7.7
	SALES OCCUPATIONS	19,056	13,674,229	479,794	545,536	3.5	4.0
243	Supervisors and Proprietors, Sales Occupations	5,118	3,598,582	116,930	130,399	3.2	3.6
253	Insurance sales occupations	628	444,520	9,071	12,596	2.0	2.8
254	Real estate sales occupations	648	481,091	19,221	28,107	4.0	5.8
255	Securities and financial services sales occupations	598	454,312	2,938	6,720	0.6	1.5
256	Advertising and related sales occupations	260	170,484	7,758	7,758	4.6	4.6
257	Sales occupations, other business services	962	705,719	26,840	28,307	3.8	4.0
258	Sales engineers	46	34,820	0	0	0.0	0.0
259	Sales representatives, mining, manufacturing, and wholesale	1,840	1,358,054	20,844	26,110	1.5	1.9
263	Sales workers, motor vehicles and boats	426	302,819	799	2,177	0.3	0.7
264	Sales workers, apparel	507	366,459	1,662	2,498	0.5	0.7
265	Sales workers, shoes	118	87,527	1,634	1,634	1.9	1.9
266	Sales workers, furniture and home furnishings	254	175,287	1,508	1,508	0.9	0.9
267	Sales workers, radio, TV, hi-fi, and appliances	351	270,996	105	2,517	0.0	0.9
268	Sales workers, hardware and building supplies	400	294,115	2,904	6,003	1.0	2.0
269	Sales workers, parts	213	147,004	726	1,923	0.5	1.3
274	Sales workers, other commodities	1,926	1,370,097	23,928	29,635	1.7	2.2
275	Sales counter clerks	252	180,243	3,533	3,533	2.0	2.0
276	Cashiers	4,085	2,944,993	231,821	244,974	7.9	8.3
277	Street and door-to-door sales workers	213	140,333	2,524	3,165	1.8	2.3
278	News vendors	107	74,302	3,711	4,477	5.0	6.0
283	Demonstrators, promoters and models, sales	84	58,396	603	763	1.0	1.3
284	Auctioneers	2	1,333	0	0	0.0	0.0
285	Sales support occupations, n.e.c.	18	12,743	733	733	5.7	5.7
	ADMINISTRATIVE SUPPORT OCCUPATIONS, INCLUDING CLERICAL	25,753	17,899,675	2,216,019	2,486,270	12.4	13.9
303	Supervisors, general office	586	415,877	44,072	51,471	10.6	12.4
304	Supervisors, computer equipment operators	14	7,216	162	162	2.2	2.2
305	Supervisors, financial records processing	136	100,805	4,237	5,055	4.2	5.0
306	Chief communications operators	5	3,593	0	0	0.0	0.0
307	Supervisors, distribution, scheduling, and adjusting clerks	280	198,940	26,903	30,885	13.5	15.5
308	Computer operators	435	310,980	33,688	40,884	10.8	13.1
309	Peripheral equipment operators	7	6,076	903	903	14.9	14.9
313	Secretaries	3,485	2,348,903	235,083	266,406	10.0	11.3
314	Stenographers	184	121,151	9,833	13,349	8.1	11.0
315	Typists	716	495,516	52,957	59,407	10.7	12.0
316	Interviewers	259	168,339	14,159	15,382	8.4	9.1
317	Hotel clerks	185	119,506	7,588	7,588	6.3	6.3
318	Transportation ticket and reservation agents	343	240,280	39,240	42,410	16.3	17.7
319	Receptionists	1,512	1,038,409	31,555	38,195	3.0	3.7
323	Information clerks, n.e.c.	549	386,704	21,203	24,736	5.5	6.4
325	Classified-ad clerks	1	879	0	0	0.0	0.0
326	Correspondence clerks	11	7,528	0	0	0.0	0.0
327	Order clerks	430	311,046	62,424	65,825	20.1	21.2
328	Personnel clerks, except payroll and timekeeping	85	57,728	4,064	5,000	7.0	8.7
329	Library clerks	225	156,160	24,971	26,778	16.0	17.1
335	File clerks	452	332,312	14,687	20,647	4.4	6.2
336	Records clerks	287	199,851	23,406	26,789	11.7	13.4
337	Bookkeepers, accounting, and auditing clerks	2,051	1,368,127	60,886	70,550	4.5	5.2
338	Payroll and timekeeping clerks	263	175,166	18,419	20,371	10.5	11.6
339	Billing clerks	307	204,364	16,390	19,049	8.0	9.3
343	Cost and rate clerks	62	41,648	7,086	7,086	17.0	17.0
344	Billing, posting, and calculating machine operators	194	135,665	5,396	6,302	4.0	4.6
345	Duplicating machine operators	47	34,658	2,452	2,545	7.1	7.3
346	Mail preparing and paper handling machine operators	14	9,023	2,415	2,415	26.8	26.8
347	Office machine operators, n.e.c.	20	12,234	643	643	5.3	5.3
348	Telephone operators	198	137,506	29,136	31,537	21.2	22.9
353	Communications equipment operators, n.e.c.	21	13,577	1,616	1,706	11.9	12.6
354	Postal clerks, except mail carriers	424	303,607	201,288	220,853	66.3	72.7
355	Mail carriers, postal service	489	341,015	262,392	272,253	76.9	79.8
356	Mail clerks, except postal service	205	138,518	17,998	21,777	13.0	15.7
357	Messengers	205	147,963	8,372	8,554	5.7	5.8
359	Dispatchers	336	214,762	42,934	46,482	20.0	21.6
363	Production coordinators	355	246,309	32,098	34,777	13.0	14.1
364	Traffic, shipping, and receiving clerks	864	648,680	89,058	94,178	13.7	14.5
365	Stock and inventory clerks	606	419,571	56,356	64,315	13.4	15.3
366	Meter readers	71	51,604	18,382	18,568	35.6	36.0
368	Weighers, measurers, checkers, and samplers	69	50,959	8,083	8,083	15.9	15.9
373	Expediters	478	340,390	23,370	26,078	6.9	7.7
374	Material recording, scheduling, and distributing clerks, n.e.c.	23	15,414	3,431	3,431	22.3	22.3
375	Insurance adjusters, examiners, and investigators	678	477,313	12,839	18,111	2.7	3.8
376	Investigators and adjusters, except insurance	1,619	1,155,121	63,076	78,211	5.5	6.8
377	Eligibility clerks, social welfare	120	83,298	17,710	23,203	21.3	27.9
378	Bill and account collectors	302	213,178	14,063	14,063	6.6	6.6
379	General office clerks	1,242	886,902	85,450	97,524	9.6	11.0
383	Bank tellers	631	448,896	9,056	10,372	2.0	2.3
384	Proofreaders	35	21,360	1,057	1,057	4.9	4.9
385	Data-entry keyers	952	678,428	58,231	67,116	8.6	9.9
386	Statistical clerks	139	103,148	11,463	13,742	11.1	13.3
387	Teachers' aides	1,159	787,440	271,242	311,563	34.4	39.6
389	Administrative support occupations, n.e.c.	1,387	966,035	112,494	127,881	11.6	13.2
	PRIVATE HOUSEHOLD OCCUPATIONS	1,016	737,801	7,822	8,217	1.1	1.1
403	Launderers and ironers	1	1,008	1,008	1,008	100.0	100.0
404	Cooks, private household	8	5,487	0	0	0.0	0.0
405	Housekeepers and butlers	25	18,551	0	0	0.0	0.0
406	Child care workers, private household	340	245,574	0	395	0.0	0.2
407	Private household cleaners and servants	642	467,182	6,814	6,814	1.5	1.5
	PROTECTIVE SERVICE OCCUPATIONS	3,433	2,482,554	948,222	1,006,918	38.2	40.6
413	Supervisors, firefighting and fire prevention occupations	60	36,945	29,202	31,870	79.0	86.3
414	Supervisors, police and detectives	158	115,866	57,477	61,567	49.6	53.1
415	Supervisors, guards	85	56,687	5,297	5,963	9.3	10.5
416	Fire inspection and fire prevention occupations	25	15,498	7,589	7,589	49.0	49.0
417	Firefighting occupations	339	249,732	170,691	178,781	68.3	71.6
418	Police and detectives, public service	769	562,597	334,218	345,279	59.4	61.4
423	Sheriffs, bailiffs, and other law enforcement officers	233	169,548	63,718	73,115	37.6	43.1
424	Correctional institution officers	427	338,654	173,489	185,683	51.2	54.8
425	Crossing guards	67	43,732	10,768	10,768	24.6	24.6
426	Guards and police, except public service	1,086	781,873	86,899	97,430	11.1	12.5
427	Protective service occupations, n.e.c.	184	111,420	8,874	8,874	8.0	8.0
	SERVICE OCCUPATIONS, EXCEPT PROTECTIVE AND HOUSEHOLD	20,340	13,951,183	1,320,247	1,449,018	9.5	10.4
433