Registration Document BOUYGUES

Main actuarial assumptions used to measure lump-sum retirement benefit obligations
Discount rate b 5.46%
(iboxx A10)
2011 2010
4.62%
(iboxx A10)
Mortality table INSEE INSEE
Retirement age (depending on business segment)
• Managerial staff 63/65 years 63/65 years
• Technical, supervisory and clerical staff, and site workers 62/63 years 62/63 years
Salary inflation rate (depending on business segment) a 1.9% to 4% 2% to 4%
(a) Includes general inflation
(b) A reduction of 50 basis points in the discount rate would increase the obligation by €21m as at 31 December 2011. Under Group accounting
policies, any such actuarial losses would be recognised directly in equity.
19.4 Employee share ownership
19.4.1 Stock options
Total number of effectively exercisable options: 0
Quoted share price on 31 December 2011: €24.345
Plan grant
date
Outstanding
options at
31/12/2011
Earliest normal
exercise date
Earliest
Number of
company Exercise price
savings scheme (€) a effectively
exercisable options
exercise date
21/06/2005 2,744,973 21/06/2009 21/06/2006 30.94 -
05/09/2006 3,514,341 05/09/2010 05/09/2007 39.49 -
05/06/2007 4,205,899 05/06/2011 05/06/2008 62.63 -
31/03/2008 4,228,371 31/03/2012 31/03/2009 42.68 -
01/04/2009 4,564,926 01/04/2013 01/04/2010 25.62 -
30/06/2010 4,138,961 01/07/2014 01/07/2011 34.08 -
14/06/2011 2,974,497 14/06/2015 14/06/2012 31.43 -
Total 0
Stock options are effectively exercisable if they meet both of the following conditions:
1) They must be legally exercisable as at 31 December 2011, either by normal exercise (4 years after the plan
grant date) or by partial exercise ahead of the normal exercise date under the terms of the company savings
scheme.
2) They must be in the money at 31 December 2011, in other words the exercise price must be less than the closing
share price on 31 December 2011 (€24.345).
(a) The exercise price takes account of the share repurchase tender offer
BOUYGUES • 2011 Registration Document • FINANCIAL STATEMENTS • Consolidated financial statements • 262