Segments

12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

Segment Reporting Disclosure [Text Block]

Segment Reporting

The Company has determined that it has two reportable segments: Employers and Cerity. Each of these segments represents a separate and distinct underwriting platform through which the Company conducts insurance business. The nature and composition of each reportable segment and its Corporate and Other activities are as follows:

The Employers segment represents the traditional business offered through the EMPLOYERS brand name through its agents, including business originated from the Company's strategic partnerships and alliances.

The Cerity segment represents the business offered under the Cerity brand name, which includes the Company's direct-to-customer business.

Corporate and Other activities consist of those holding company expenses that are not considered to be underwriting in nature, the financial impact of the LPT agreement, and legacy business assumed and ceded by CIC. These expenses are not considered to be part of a reportable segment and are not otherwise allocated to a reportable segment.

The Company has determined that it is not practicable to report identifiable assets by segment since certain assets are used interchangeably among the segments.

The following table summarizes the Company's written premiums and components of net income before income taxes by reportable segment.

	Employers		Cerity		Corporate and Other		Total
	(in millions)
Year Ended December 31, 2021
Gross premiums written	$	588.2	$	1.5	$	—	$	589.7
Net premiums written	581.6		1.5		—		583.1
Net premiums earned	573.7		0.7		—		574.4
Net investment income	69.3		2.8		0.6		72.7
Net realized and unrealized gains on investments	54.5		0.3		(0.2)		54.6
Other income	1.4		—		—		1.4
Total revenues	698.9		3.8		0.4		703.1
Losses and loss adjustment expenses	326.2		0.5		(11.5)		315.2
Commission expense	76.1		—		—		76.1
Underwriting and general and administrative expenses	131.2		12.9		16.1		160.2
Interest and financing expenses	—		—		0.5		0.5
Other expenses	4.1		—		—		4.1
Total expenses	537.6		13.4		5.1		556.1
Net income (loss) before income taxes	$	161.3	$	(9.6)	$	(4.7)	$	147.0

	Employers		Cerity		Corporate and Other		Total
	(in millions)
Year Ended December 31, 2020
Gross premiums written	$	579.8	$	0.3	$	—	$	580.1
Net premiums written	574.6		0.3		—		574.9
Net premiums earned	615.1		0.2		—		615.3
Net investment income	72.1		3.1		1.1		76.3
Net realized and unrealized gains on investments	20.9		—		(1.9)		19.0
Other income	0.8		—		—		0.8
Total revenues	708.9		3.3		(0.8)		711.4
Losses and loss adjustment expenses	314.2		0.1		(11.9)		302.4
Commission expense	78.8		—		—		78.8
Underwriting and general and administrative expenses	151.1		16.6		13.6		181.3
Interest and financing expenses	0.1		—		0.3		0.4
Other expenses	0.7		0.1		—		0.8
Total expenses	544.9		16.8		2.0		563.7
Net income (loss) before income taxes	$	164.0	$	(13.5)	$	(2.8)	$	147.7

	Employers		Cerity		Corporate and Other		Total
	(in millions)
Year Ended December 31, 2019
Gross premiums written	$	696.8	$	0.1	$	—	$	696.9
Net premiums written	691.4		0.1		—		691.5
Net premiums earned	695.8		—		—		695.8
Net investment income	84.1		0.3		3.7		88.1
Net realized and unrealized gains on investments	47.7		0.1		3.3		51.1
Other income	0.9		—		—		0.9
Total revenues	828.5		0.4		7.0		835.9
Losses and loss adjustment expenses	378.6		—		(12.7)		365.9
Commission expense	88.1		—		—		88.1
Underwriting and general and administrative expenses	153.2		16.0		18.3		187.5
Interest and financing expenses	0.6		—		—		0.6
Total expenses	620.5		16.0		5.6		642.1
Net income (loss) before income taxes	$	208.0	$	(15.6)	$	1.4	$	193.8

Entity-Wide Disclosures

The Company operates solely within the United States and does not have revenue from transactions with a single policyholder accounting for 10% or more of its revenues. The following table shows the Company's in-force premiums and number of policies in-force for each state of our largest states and all other states combined as of December 31:

	2021			2020			2019
State	In-force Premiums		Policies In-force	In-force Premiums		Policies In-force	In-force Premiums		Policies In-force
	(dollars in millions)
California	$	258.4	40,704	$	262.0	39,610	$	329.8	43,079
Florida	41.1		7,989	37.9		6,898	36.3		5,822
New York	24.5		7,307	26.7		6,657	31.7		5,679
Other (43 states and D.C.)	247.4		55,350	251.3		50,341	266.8		44,104
Total	$	571.4	111,350	$	577.9	103,506	$	664.6	98,684