Table 11. Share of estimates with “large” differences after exclusion of WC costs, by estimate type and collective bargaining status (ECEC)
Bargaining status	Number of estimates	Estimates with “large” differences	Share (%)
Total compensation
Union	333	2	1
Nonunion	333	0	0
Total benefits
Nonunion	333	164	49
Union	333	74	22
Legally required benefits
Nonunion	333	333	100
Union	333	326	98
Note: ECEC = Employer Costs for Employee Compensation. WC = workers' compensation. Estimates are ordered by share with “large” differences. We define “large” as an amount at least equivalent to what would be a statistically significant change at the 10-percent level, 1.64 times the standard error for the estimate. Source: U.S. Bureau of Labor Statistics.