For Enterprise, Unlimited,Performance, and Developer Editions, each workflow rule and approval process can have: 10 time triggers 40 immediate actions 40 time-dependent actions per time trigger
Note that for both immediate and time-dependent actions, there can be no more than:
Governor limits for workflow action
For Enterprise, Unlimited,Performance, and Developer Editions, each workflow rule and approval process can have:
10 time triggers
40 immediate actions
40 time-dependent actions per time trigger
Note that for both immediate and time-dependent actions, there can be no more than:
10 email alerts
10 tasks
10 field updates
10 outbound messages
for more detail follow the below link
https://help.salesforce.com/apex/HTViewHelpDoc?id=limits_approvals_workflows.htm&language=en_US